A Trivia Quiz On Horticulture!

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A Trivia Quiz On Horticulture! - Quiz

Can you pass this trivia quiz about horticulture? Horticulture is the science and art of producing fruits, vegetables, flowers, herbs, and ornamental plants. The production and intake of quality fruits and vegetables are beneficial to all of us. It is an essential aspect, as horticulture improves our daily lives. This quiz for anyone interested in horticulture. Take this quiz and see how much you know.


Questions and Answers
  • 1. 

    Extensive Green Roofs have media layers greater than 6 inches and often have small trees and shurbs planted on them.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Extensive Green Roofs typically have media layers less than 6 inches and are designed to support low-growing vegetation like sedums and grasses, rather than trees and shrubs. Therefore, the statement that Extensive Green Roofs often have small trees and shrubs planted on them is false.

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  • 2. 

    The best time to prune a shrub which flowers for a week to ten days in mid- April would be

    • A.

      Late march

    • B.

      Late april

    • C.

      July

    • D.

      November

    Correct Answer
    B. Late april
    Explanation
    Late April would be the best time to prune a shrub that flowers for a week to ten days in mid-April because pruning immediately after the flowering period allows the shrub to develop new growth and set buds for the following year without interrupting the current blooming cycle. Pruning in late March may remove potential flowers, while pruning in July or November may disrupt the shrub's growth and flowering patterns.

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  • 3. 

    To maintain the highest quality fruit and vegetables for post-harvest storage one needs to reduce the levels of nitrogen fertilization at the end of the production cycle.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    To maintain the highest quality fruit and vegetables for post-harvest storage, reducing the levels of nitrogen fertilization at the end of the production cycle is necessary. Excessive nitrogen fertilization can lead to an overgrowth of foliage, which can result in a decrease in the quality and shelf life of the produce. By reducing nitrogen levels towards the end of the production cycle, the focus can shift towards fruit and vegetable development, resulting in better quality produce that can be stored for longer periods without compromising its freshness and taste.

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  • 4. 

    The major advantage of green roofs in urban areas is the retention of rainwater.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Green roofs have the major advantage of retaining rainwater in urban areas. This is because the vegetation and soil on the roof absorb and store rainwater, reducing stormwater runoff and the burden on drainage systems. By retaining rainwater, green roofs help to mitigate the effects of urban heat islands, reduce the risk of flooding, and provide a sustainable water source for the plants on the roof. Additionally, the retention of rainwater on green roofs can also contribute to improved air quality and energy efficiency in buildings.

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  • 5. 

    Which plants are most often used on green roofs due to their tolerance to extreme heat and drought?

    • A.

      Native grasses

    • B.

      Bulb crops

    • C.

      Herbaceous perennials that go dormant in the winter

    • D.

      Sedums and other suculents

    Correct Answer
    D. Sedums and other suculents
    Explanation
    Sedums and other succulents are most often used on green roofs due to their tolerance to extreme heat and drought. These plants have adapted to arid environments by storing water in their leaves, stems, and roots, allowing them to survive in conditions with limited water availability. Their ability to withstand high temperatures and dry conditions makes them ideal for green roofs, where they are exposed to direct sunlight and may not receive regular watering. Additionally, sedums and succulents have shallow root systems, which makes them suitable for the shallow growing media typically found on green roofs.

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  • 6. 

    This plant has a mycorrhiza fungus associated with its roots, to aid in the uptake of nutrients, as the plant does not form root hairs.

    • A.

      Rasberries

    • B.

      Cranberries

    • C.

      Blueberries

    • D.

      Strawberris

    Correct Answer
    C. Blueberries
    Explanation
    Blueberries have a mycorrhiza fungus associated with their roots to aid in the uptake of nutrients. This is because blueberry plants do not form root hairs, so they rely on the symbiotic relationship with the fungus to enhance their nutrient absorption. The mycorrhiza fungus forms a network of hyphae around the plant's roots, increasing the surface area for nutrient absorption and helping the plant thrive in nutrient-poor soils.

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  • 7. 

    Cutting an entire shrub back to 6 inches above the ground is called _______ pruning.

    • A.

      Stubbing

    • B.

      Renewal

    • C.

      Heading back

    • D.

      Rejuvenation

    Correct Answer
    D. Rejuvenation
    Explanation
    The correct answer is rejuvenation. Rejuvenation pruning involves cutting an entire shrub back to a height of 6 inches above the ground. This pruning technique helps to stimulate new growth and rejuvenate the shrub, resulting in healthier and more vigorous plants. It is often done to revitalize overgrown or damaged shrubs and promote better flowering or fruit production.

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  • 8. 

    Cranberries are grown in wet areas as they are aquatic plants that require their roots to be submerged in water.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Cranberries are not aquatic plants that require their roots to be submerged in water. Although cranberries do grow in wet areas, they are not aquatic plants. They are actually low-lying shrubs that prefer moist soil conditions. While cranberries can tolerate being submerged in water temporarily during the growing season, they do not require constant submersion like true aquatic plants. Therefore, the statement is false.

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  • 9. 

    Vegetables such as tomatoes require high levels of nitrogen fertilizer to produce the best quality fruit.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    This statement is false. While it is true that nitrogen is an important nutrient for plant growth, excessive nitrogen fertilizer can actually have negative effects on tomato plants. Too much nitrogen can lead to excessive foliage growth at the expense of fruit production. Therefore, it is important to provide a balanced amount of nitrogen fertilizer to tomatoes to achieve optimal fruit quality.

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  • 10. 

    Winter chilling requirements for temperate zone fruit trees is based on

    • A.

      Total number of hourse below freezing

    • B.

      Total number of hourse between 32 and 45 degress F

    • C.

      Total number of hours above 60 degrees F

    • D.

      Temperate zone tree fruites do not have a chilling requirement

    Correct Answer
    B. Total number of hourse between 32 and 45 degress F
    Explanation
    The winter chilling requirements for temperate zone fruit trees are based on the total number of hours between 32 and 45 degrees Fahrenheit. This temperature range is considered the optimal range for the trees to undergo a dormant period, which is necessary for their proper growth and development. The accumulation of a sufficient number of hours within this range ensures that the trees receive the necessary chilling they need to break dormancy and initiate bud development in the following spring.

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  • 11. 

    Cut flowers with high internal____ levels will last longer than those with low levels.

    • A.

      Nitrogen

    • B.

      Calcium

    • C.

      Carbohydrate

    • D.

      Ethylene

    Correct Answer
    C. Carbohydrate
    Explanation
    Cut flowers with high levels of carbohydrates will last longer than those with low levels. Carbohydrates are the primary source of energy for plants and play a crucial role in their growth and development. In cut flowers, carbohydrates are essential for maintaining turgidity and preventing wilting. They provide the necessary nutrients for the flowers to continue their metabolic processes, including respiration and water uptake. Therefore, high carbohydrate levels in cut flowers help to prolong their lifespan by sustaining their physiological functions and delaying senescence.

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  • 12. 

    Dormancy caused by external conditions is called

    • A.

      Endodormancy

    • B.

      Ecodormancy

    • C.

      Physical dormancy

    • D.

      Cold induced dormancy

    Correct Answer
    B. Ecodormancy
    Explanation
    Ecodormancy refers to dormancy that is caused by external conditions. This means that the dormancy is triggered by environmental factors such as temperature, light, or moisture levels. Unlike endodormancy, which is regulated internally by the plant's physiological processes, ecodormancy is influenced by the plant's surroundings. Physical dormancy refers to a type of dormancy caused by a physical barrier, such as a hard seed coat, preventing germination. Cold-induced dormancy specifically refers to dormancy triggered by low temperatures.

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  • 13. 

    Hedges are best maintained when they are pruned so that the

    • A.

      Top is wider than the bottom

    • B.

      Bottom is wider than the top

    • C.

      The sides are perpendicular to the top and bottom

    • D.

      None of the above

    Correct Answer
    B. Bottom is wider than the top
    Explanation
    Hedges are best maintained when they are pruned so that the bottom is wider than the top. This is because pruning the bottom wider helps to ensure that sunlight reaches all parts of the hedge, promoting healthy growth and preventing the lower branches from becoming shaded and dying off. Additionally, having a wider bottom helps to create a more stable and visually appealing shape for the hedge.

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  • 14. 

    Which of the following is not a technique used to increase production of a small space garden?

    • A.

      Intercropping

    • B.

      Single row planting

    • C.

      Wide row planting

    • D.

      Vertical training

    Correct Answer
    B. Single row planting
    Explanation
    Single row planting is not a technique used to increase production of a small space garden. Intercropping involves planting different crops together to maximize space and resources. Wide row planting involves planting crops in wider rows to allow for more plants per row. Vertical training involves training plants to grow vertically, using trellises or stakes, to maximize vertical space. However, single row planting refers to planting crops in a single row, which does not make efficient use of space and may limit the number of plants that can be grown.

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  • 15. 

    Which of the following internal plant hormone prevents dormant buds from prematurely growing during warm spells in the winter?

    • A.

      Gibberellin

    • B.

      Absicic acid

    • C.

      Ethylene

    • D.

      Auxin

    Correct Answer
    B. Absicic acid
    Explanation
    Absicic acid is an internal plant hormone that prevents dormant buds from prematurely growing during warm spells in the winter. It helps to maintain dormancy and inhibits bud growth until the appropriate time for growth and development. Gibberellin, ethylene, and auxin are other plant hormones that play different roles in plant growth and development, but they do not specifically prevent premature bud growth during warm spells in the winter.

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  • 16. 

    Strawberries are generally mulched during the winter in this climate to

    • A.

      Keep the soil dry in the winer

    • B.

      Prevent the soil from freezing

    • C.

      Reduce frost heaving of the plants

    • D.

      Reduce sunscald

    Correct Answer
    C. Reduce frost heaving of the plants
    Explanation
    Mulching strawberries during the winter in this climate helps to reduce frost heaving of the plants. Frost heaving occurs when the soil freezes and thaws repeatedly, causing the plants to be pushed out of the ground. By mulching, a layer of insulation is created that helps to regulate the temperature of the soil, preventing it from freezing and thawing too rapidly. This reduces the likelihood of frost heaving, which can damage the plants and their root systems.

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  • 17. 

    Dwarf apple trees are most often produced by grafting and or budding.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Dwarf apple trees are commonly produced through grafting and budding techniques. Grafting involves joining a scion (the desired apple variety) onto a rootstock (a different apple variety with desired dwarfing characteristics). Budding is a similar technique where a bud from the desired apple variety is inserted into the rootstock. These methods allow for the propagation of dwarf apple trees, which have shorter stature and are easier to manage and harvest. Therefore, the statement is true.

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  • 18. 

    Blueberries require alkaline solis for best growth and fruit production

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Blueberries require alkaline soils for best growth and fruit production. This means that the soil pH needs to be on the higher side, typically between 5.0 and 6.5, for optimal blueberry growth. Acidic soils can inhibit nutrient uptake and affect the overall health and productivity of blueberry plants. Therefore, it is important to ensure that the soil pH is within the appropriate range to provide the necessary conditions for blueberries to thrive.

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  • 19. 

    The fruiting stems (canes) of raspberries are called

    • A.

      Floricanes

    • B.

      Primocanes

    • C.

      Candy canes

    • D.

      Fruiting spurs

    Correct Answer
    A. Floricanes
    Explanation
    The correct answer is "floricanes" because this term refers to the fruiting stems or canes of raspberries. Floricanes are the second-year canes that produce fruit, while primocanes are the first-year canes that grow but do not fruit. Candy canes are a type of sweet treat and not related to raspberries, and fruiting spurs are structures found in other fruit plants like apples and pears.

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  • 20. 

    To break bud dormancy of a northern apple variety compared to a southern variety requires

    • A.

      Less hours of cold

    • B.

      More hours of cold

    • C.

      Longer day lengts

    • D.

      Shorter day lengths

    Correct Answer
    C. Longer day lengts
    Explanation
    The correct answer is longer day lengths. Northern apple varieties require longer day lengths in order to break bud dormancy compared to southern varieties. This means that in regions with shorter daylight hours, it may take longer for the buds of northern apple varieties to start growing in the spring.

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  • 21. 

    Which of the following is a useful function of ethylene in the horticultural industry

    • A.

      Reduces fungal infections

    • B.

      Increases the life of cut flowers

    • C.

      Ripening of fruits such as bananas

    • D.

      All of the above

    Correct Answer
    C. Ripening of fruits such as bananas
    Explanation
    Ethylene is a useful function in the horticultural industry as it promotes the ripening of fruits, such as bananas. Ethylene gas triggers a series of biochemical reactions in the fruit, leading to changes in color, texture, and flavor. This process is crucial for fruits to reach their optimal ripeness, making them more appealing and ready to eat. Therefore, ethylene's role in ripening fruits is an important function in the horticultural industry.

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  • 22. 

    Which of the following materials will help increase the life of cut flowers

    • A.

      A copper penny

    • B.

      Citrus flavored soda

    • C.

      Aspirin

    • D.

      None of the above

    Correct Answer
    B. Citrus flavored soda
    Explanation
    Citrus flavored soda can help increase the life of cut flowers because it contains citric acid, which acts as a preservative. The acid helps lower the pH level of the water, preventing the growth of bacteria and fungi that can cause the flowers to deteriorate. Additionally, the sugar content in the soda provides nourishment to the flowers, helping them stay fresh for a longer period of time. Therefore, using citrus flavored soda in the vase water can extend the lifespan of cut flowers.

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  • 23. 

    The training of fruit trees to a wall is called

    • A.

      Espalier

    • B.

      Pollarding

    • C.

      Bonsai

    • D.

      Stooling

    Correct Answer
    A. Espalier
    Explanation
    The correct answer is espalier. Espalier is a horticultural technique where fruit trees are trained to grow flat against a wall or trellis. This method allows for better space utilization and easier maintenance of the trees. It also helps in maximizing sunlight exposure and promoting better fruit production.

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  • 24. 

    A tree with a wide branch (crotch) angles will have a stronger branch structure than one with narrow branch angles.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A tree with wide branch angles will have a stronger branch structure because the wider angles allow for better weight distribution and support. This means that the branches are less likely to break or snap under the weight of leaves, fruits, or strong winds. Narrow branch angles, on the other hand, create weak attachment points that are more prone to failure. Therefore, a tree with wide branch angles will generally have a stronger and more stable branch structure.

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  • 25. 

    Carbon dioxide is the gas which caused rapid death of cut flowers

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
  • 26. 

    Spraying strawberry plants with water during freezing temperatures is one method of preventing damage to the blossoms during late spring frosts

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Spraying strawberry plants with water during freezing temperatures is indeed a method of preventing damage to the blossoms during late spring frosts. This technique, known as "sprinkler irrigation," works by creating a thin layer of ice on the plants, which helps to insulate them from the freezing temperatures. As the water freezes, it releases latent heat, keeping the temperature around the plants slightly above freezing. This protective layer of ice acts as a barrier, preventing the blossoms from being damaged by the cold temperatures. Therefore, the statement is true.

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  • 27. 

    When removing large tree brances one should

    • A.

      Cut as close to the remaining branch as possible

    • B.

      Cut just outside the branch collar

    • C.

      Cut inside the branch collar

    • D.

      Cut leaving a 2 inch stub

    Correct Answer
    B. Cut just outside the branch collar
    Explanation
    When removing large tree branches, it is recommended to cut just outside the branch collar. The branch collar is the swollen area where the branch attaches to the trunk or main branch. By cutting just outside the branch collar, the tree's natural healing process is not disrupted, and it can effectively seal off the wound. This helps to prevent decay and disease from entering the tree, promoting its overall health and longevity. Cutting too close to the remaining branch or inside the branch collar can cause damage and hinder the tree's ability to heal properly. Leaving a stub can also lead to decay and insect infestation.

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  • 28. 

    The growing season for a given area is determined by

    • A.

      The days between the last frost n the falla nd the last frost in the spring

    • B.

      The days between the last frost in the spring and the first frost in the fall

    Correct Answer
    B. The days between the last frost in the spring and the first frost in the fall
    Explanation
    The growing season for a given area is determined by the days between the last frost in the spring and the first frost in the fall because these are the dates that mark the period when temperatures are consistently warm enough for plants to grow. The last frost in the spring signifies the end of winter and the beginning of warmer weather, while the first frost in the fall indicates the start of colder temperatures and the end of the growing season. The time in between these two frosts is when plants have the best conditions to thrive and grow.

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  • 29. 

    Which of the follwong would be the best location for a vegetable garden

    • A.

      Morning sun

    • B.

      Afternoon sun

    • C.

      All day full sun

    • D.

      All day semi shade

    Correct Answer
    C. All day full sun
    Explanation
    A vegetable garden requires ample sunlight to thrive. Full sun exposure throughout the day provides the necessary amount of light for photosynthesis, which is crucial for plant growth and the production of fruits and vegetables. With all day full sun, the plants will receive sufficient energy to produce healthy and abundant harvests. Morning sun or afternoon sun alone may not provide enough sunlight for optimal growth, while all day semi-shade will restrict the amount of light reaching the plants, resulting in poor growth and yield.

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  • 30. 

    How do you tell the difference between a black raspberry and a true blackberry

    • A.

      Blackberry vines live and bear fruit on the same stems for many years

    • B.

      Black raspberries are produced only on one year old stems

    • C.

      When harvesting blackberries the receptacle remains on the plant

    • D.

      When harvesting black raspberries the receptacle remains on the plant

    Correct Answer
    D. When harvesting black raspberries the receptacle remains on the plant
    Explanation
    Black raspberries and blackberries can be distinguished by the way they are harvested. When harvesting black raspberries, the receptacle (the central core) remains attached to the plant, while when harvesting blackberries, the receptacle is detached from the plant. This difference in the way the receptacle is left behind after harvesting can help in identifying whether the fruit is a black raspberry or a true blackberry.

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  • 31. 

    Overwintering greenhouses used for storing dormant container plants through the winter are covered with ____as it helps the day time temperatures lower

    • A.

      Clear poly

    • B.

      White poly

    • C.

      70%shade cloth

    • D.

      Black poly

    Correct Answer
    B. White poly
    Explanation
    White poly is used to cover overwintering greenhouses because it helps lower the daytime temperatures. The white color reflects sunlight and heat, preventing the greenhouse from becoming too hot during the day. This is important for storing dormant container plants, as they require cooler temperatures during the winter months. By using white poly, the greenhouse can maintain a more suitable temperature for the plants, ensuring their survival until spring.

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  • 32. 

    Which of the following green house coverings would provide the greatest savings in heating costs

    • A.

      Glass

    • B.

      Double strenght glass

    • C.

      Doublly layer polyethylen film

    • D.

      Fiberglass

    Correct Answer
    C. Doublly layer polyethylen film
    Explanation
    A double layer polyethylene film would provide the greatest savings in heating costs compared to the other options. This is because the double layer provides better insulation, trapping heat inside the greenhouse and reducing heat loss. Glass and double strength glass may allow more heat to escape, while fiberglass may not provide as effective insulation as the polyethylene film.

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  • 33. 

    Seeds are scarified to

    • A.

      Disinfect the seeds before germination

    • B.

      Break seed dormancy with a cold moist period

    • C.

      Enable water to enter through a hard seed coat

    • D.

      Improve long term storage of the seed

    Correct Answer
    C. Enable water to enter through a hard seed coat
    Explanation
    Seeds are scarified to enable water to enter through a hard seed coat. Scarification is a process in which the hard outer covering of a seed is broken or weakened, allowing water to penetrate and initiate germination. Some seeds have a hard coat that prevents water absorption, and scarification helps to overcome this barrier. By enabling water to enter the seed, scarification promotes germination and ensures the successful growth of the plant.

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  • 34. 

    Which of the following nursery operations results in the greates amount of natural soil loss when the plants are sold

    • A.

      Container

    • B.

      Bare root

    • C.

      Balled abd burlaped

    • D.

      Pot in pot

    Correct Answer
    C. Balled abd burlaped
    Explanation
    Balled and burlaped nursery operation results in the greatest amount of natural soil loss when the plants are sold. This is because balled and burlaped plants are typically grown in soil and then dug up with a ball of soil around the roots, which is then wrapped in burlap. When these plants are sold, the burlap is often removed, causing a significant amount of soil to be lost along with it. In contrast, container-grown plants are sold with the soil intact in the container, bare root plants are sold without any soil, and pot-in-pot plants are grown in containers within the ground, reducing soil loss during sale.

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  • 35. 

    Which of the follwong plant hormones is most commonly used to aid in the rooting of stem cuttings

    • A.

      Ethylene

    • B.

      GA

    • C.

      IAA

    • D.

      IBA

    Correct Answer
    D. IBA
    Explanation
    IBA, or indole-3-butyric acid, is the most commonly used plant hormone to aid in the rooting of stem cuttings. IBA promotes root formation by stimulating cell division and growth in the stem tissue, leading to the development of new roots. It also helps in the formation of adventitious roots, which are essential for successful propagation of plants from cuttings. Ethylene, GA (gibberellic acid), and IAA (indole-3-acetic acid) are other plant hormones that play different roles in plant growth and development, but they are not primarily used for rooting stem cuttings.

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  • 36. 

    The best tree to use on the south side of a single story home in this climate to reduce heating and cooling costs would be

    • A.

      Tall evergreen tree

    • B.

      Tall decidous tree

    • C.

      Tree should be on the north side of the house

    • D.

      Trees have no influence on heating and cooling costs of a home in this climate

    Correct Answer
    B. Tall decidous tree
    Explanation
    A tall deciduous tree would be the best tree to use on the south side of a single-story home in this climate to reduce heating and cooling costs. Deciduous trees shed their leaves in the fall, allowing sunlight to penetrate through and warm the home during the colder months. In the summer, the tree's foliage provides shade, reducing the amount of direct sunlight that enters the home and helping to keep it cool. This combination of benefits makes a tall deciduous tree an ideal choice for reducing heating and cooling costs in this climate.

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  • 37. 

    The best time of year to seed a new lawn in this part of the country is

    • A.

      Early spring

    • B.

      Early summer

    • C.

      Late summer or early fall

    • D.

      Just before the ground freezes in the late fall

    Correct Answer
    C. Late summer or early fall
    Explanation
    Late summer or early fall is the best time of year to seed a new lawn in this part of the country because the weather conditions during this time are ideal for seed germination and establishment. The soil is still warm from the summer months, which promotes faster seed growth. Additionally, there is usually more rainfall during this time, providing the necessary moisture for the seeds to sprout. Planting in late summer or early fall also allows the grass to establish strong roots before the winter, leading to a healthier and more resilient lawn in the following spring.

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  • 38. 

    Which would be the best conditions to store seed that does not have a dormancy condition for sowing the following year

    • A.

      In a sealed containger with damp potting soil at 70 degress

    • B.

      In a sealed containger wtih damp potting soil at 40 degress

    • C.

      In a dry sealed container at 70 degrees

    • D.

      In a dry sealed container at 40 degrees

    Correct Answer
    D. In a dry sealed container at 40 degrees
  • 39. 

    When back filling the planting hole for a newly planted container grown plant one should always mix in 25 % peat moss or other organic matter to help the roots get established in the new site

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Adding 25% peat moss or other organic matter to the backfilling of a planting hole for a newly planted container grown plant is not necessary. While organic matter can be beneficial for improving soil quality, it is not always required for root establishment. The success of root establishment depends on factors such as proper watering, soil compaction, and planting depth. Therefore, the statement is false.

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  • 40. 

    How can you tell if a plant is a stem or a root

    • A.

      Presence of secondary meristems

    • B.

      Presence or absense of nodes

    • C.

      Where the plant part is located

    • D.

      The presence or absense of cholorophyll

    Correct Answer
    B. Presence or absense of nodes
    Explanation
    The presence or absence of nodes can help determine if a plant is a stem or a root. Nodes are the points on a plant's stem where leaves, branches, or buds emerge. In contrast, roots do not have nodes. By examining the plant and identifying if there are any nodes present, one can differentiate between a stem and a root.

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  • 41. 

    When mowing turf, one should never cute more than one third of the toal height

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    When mowing turf, it is important to never cut more than one third of the total height. This is because cutting more than one third can cause stress to the grass and weaken its root system, making it more susceptible to diseases and pests. By only cutting one third, the grass can recover quickly and maintain its health and appearance.

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  • 42. 

    The caliper of a tree refers to

    • A.

      The height of the tree

    • B.

      The diameter of the trunk at 4.5 feet above the ground

    • C.

      The length of the longest branch

    • D.

      The size of the root ball

    Correct Answer
    B. The diameter of the trunk at 4.5 feet above the ground
    Explanation
    The caliper of a tree refers to the diameter of the trunk at 4.5 feet above the ground. This measurement is commonly used in horticulture and arboriculture to determine the size and health of a tree. By measuring the trunk diameter at a standard height, it allows for consistent comparisons between different trees. The caliper measurement is important for various purposes such as selecting the right tree for a specific location, determining the appropriate size of a tree hole, or assessing the tree's growth rate.

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  • 43. 

    The size of the planting hole for a container grown tree or shrub should be

    • A.

      Slightly larger than the diameter of the container

    • B.

      Twice as deep as the container height

    • C.

      The same size as the diameter of the container

    • D.

      Two to three times as wide as the container

    Correct Answer
    D. Two to three times as wide as the container
    Explanation
    The correct answer is two to three times as wide as the container. When planting a container-grown tree or shrub, it is important to ensure that the planting hole is wide enough to accommodate the roots. By making the hole two to three times as wide as the container, it allows room for the roots to spread out and establish themselves in the surrounding soil. This promotes better nutrient uptake and overall growth of the plant. Additionally, a wider hole helps to prevent the roots from becoming root-bound and encourages better stability for the tree or shrub.

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  • 44. 

    Greenhouse firms in the netherlands tend to be more efficient than green house operations in the US because in the Netherlands

    • A.

      An individual grower produce many different plant species plants in many different sizes

    • B.

      An individual grower produce single or very few different crop species of the same size

    • C.

      Labor is cheaper

    • D.

      There is less competition

    Correct Answer
    B. An individual grower produce single or very few different crop species of the same size
    Explanation
    In the Netherlands, greenhouse firms tend to be more efficient because individual growers focus on producing single or very few different crop species of the same size. This specialization allows them to streamline their processes and optimize their resources for specific crops, leading to higher efficiency. By focusing on a limited range of crops, growers can gain expertise and fine-tune their cultivation techniques, resulting in better yields and cost-effectiveness. This specialization also enables them to standardize production methods, implement efficient supply chains, and achieve economies of scale. Overall, the focus on single or few crop species of the same size contributes to the higher efficiency of greenhouse operations in the Netherlands.

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  • 45. 

    A plant propogated by a leaf bud cutting requires the cutting to develop___to produce a new plant

    • A.

      Only roots throught dedifferentiation

    • B.

      Only shoots through dedifferentiation

    • C.

      Both roots and shoots through dedifferentiation

    • D.

      Seeds

    Correct Answer
    B. Only shoots through dedifferentiation
    Explanation
    When a plant is propagated by a leaf bud cutting, it requires the cutting to develop only shoots through dedifferentiation in order to produce a new plant. Dedifferentiation is the process by which specialized cells revert back to a less specialized state, allowing them to develop into different types of tissues and organs. In this case, the leaf bud cutting will undergo dedifferentiation to develop shoots, which will eventually grow into a new plant. No roots are required in this process, as the cutting can rely on the stored nutrients in the leaf bud to support its growth until it can establish its own root system.

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  • 46. 

    Which of the following irrigation systems would be the most effficietn, in regards to water use, when producing container grown plants

    • A.

      Hand watering

    • B.

      Overhead sprinkler

    • C.

      Drip systems

    • D.

      Ebb and flow systems

    Correct Answer
    A. Hand watering
    Explanation
    Hand watering would be the most efficient irrigation system in terms of water use when producing container-grown plants. This is because hand watering allows for precise control over the amount of water applied to each plant, ensuring that only the necessary amount of water is used. With hand watering, there is less chance of water wastage or overwatering compared to other irrigation systems such as overhead sprinklers or drip systems. Additionally, hand watering allows for visual inspection of each plant, enabling early detection of any issues or diseases.

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  • 47. 

    Chrysanthemums are pinched to

    • A.

      Reduce the number of days until flowering

    • B.

      Produce a taller plant

    • C.

      To increase the number of flowers

    • D.

      All the above

    Correct Answer
    C. To increase the number of flowers
    Explanation
    Pinching chrysanthemums refers to the act of removing the growing tips of the plant. By doing this, the plant is encouraged to produce more lateral shoots, which in turn leads to an increase in the number of flowers. Therefore, pinching chrysanthemums helps to increase the number of flowers on the plant.

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  • 48. 

    What is the major advantage of pot in pot container production over above ground container production

    • A.

      Less dependence on irrigation

    • B.

      Reduced dependency on supplemental winter protection

    • C.

      Easier for the consumer to plant

    • D.

      Can use soil mixes that more resemble the native soil

    Correct Answer
    B. Reduced dependency on supplemental winter protection
    Explanation
    Pot in pot container production has a major advantage over above ground container production because it reduces the dependency on supplemental winter protection. The pot in pot method involves placing the container with the plant inside a larger container buried in the ground. This provides insulation and protection to the plant roots during the winter months, reducing the need for additional measures to protect the plant from cold temperatures. This advantage makes pot in pot container production a more efficient and cost-effective option for growers.

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  • 49. 

    Asexual methods of propogation are used to maintain or produce specific plant clones of woody plants

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Asexual methods of propagation, such as grafting or cutting, are commonly used in horticulture to maintain or produce specific plant clones of woody plants. This is because these methods allow for the reproduction of plants with desirable traits, such as disease resistance or specific flower color, without relying on seeds. By using asexual propagation, growers can ensure that the new plants will be genetically identical to the parent plant, thus preserving the desired characteristics. Therefore, the statement is true.

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  • 50. 

    A tuber is composed mostly of stem tissue

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A tuber is a swollen underground stem that stores nutrients for the plant. It is composed mostly of stem tissue, which differentiates it from other plant structures like roots or leaves. The stem tissue in a tuber helps in storing carbohydrates and other essential nutrients, allowing the plant to survive in adverse conditions. Therefore, the statement "a tuber is composed mostly of stem tissue" is true.

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Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Feb 12, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 28, 2010
    Quiz Created by
    Megan Christine

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