Test On Vascular Plants

2.

Ferns produce spores during

Germination
Fertilization
Sexual reproduction
Asexual reproduction

Correct Answer

A. Asexual reproduction

Explanation

Ferns produce spores during asexual reproduction. Asexual reproduction in ferns occurs through the production of spores, which are single-celled structures that can develop into new individuals without the need for fertilization or the involvement of gametes. These spores are released from the fern and can disperse through various means such as wind or water. When conditions are favorable, the spores germinate and grow into new fern plants, genetically identical to the parent plant. Therefore, asexual reproduction is the process through which ferns produce spores.

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1

3.

Plant tissue that carries food substances down from the plants leaves is called

Stoma
Cambium
Phloem
Xylem

Correct Answer

A. Phloem

Explanation

Phloem is the plant tissue responsible for transporting food substances, such as sugars and nutrients, from the leaves to other parts of the plant. It is composed of specialized cells called sieve tubes and companion cells, which work together to facilitate the movement of these substances through the plant. Unlike xylem, which transports water and minerals upwards from the roots, phloem transports food substances in both upward and downward directions, allowing for the distribution of nutrients to all parts of the plant. Therefore, phloem is the correct answer.

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4.

Which of these structures is not a stem?

Bulb
Rhizome
Frond
Tuber

Correct Answer

A. Frond

Explanation

A frond is not a stem. A frond is a large, divided leaf that is typically found in ferns and palm trees. It is different from a stem because it does not have the characteristic structure and function of a stem, which is to support the plant, transport water and nutrients, and produce leaves, flowers, and fruits.

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5.

Angiosperms produce

Cones
Uncovered seeds
Covered seeds
Spores

Correct Answer

A. Covered seeds

Explanation

Angiosperms, also known as flowering plants, produce covered seeds. This means that their seeds are enclosed within a protective structure, such as a fruit or a seed coat. This adaptation provides several advantages, including protection from desiccation, mechanical damage, and predation. Additionally, the covering helps in seed dispersal by facilitating attachment to animals or aiding in wind dispersal. The production of covered seeds is a defining characteristic of angiosperms and is one of the reasons for their evolutionary success and dominance in terrestrial ecosystems.

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6.

Which structure produces eggs?

Stamen
Anther
Ovary
Style

Correct Answer

A. Ovary

Explanation

The ovary is the structure in a plant that produces eggs. It is part of the female reproductive system and is responsible for the development and maturation of the ovules, which contain the eggs. The ovary plays a crucial role in plant reproduction as it is where fertilization takes place, leading to the formation of seeds.

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7.

The union of the sperm and the egg is called

Germination
Transpiration
Pollination
Fertilization

Correct Answer

A. Fertilization

Explanation

Fertilization is the correct answer because it refers to the process of the union of the sperm and the egg. This process occurs in sexual reproduction and is essential for the formation of a new organism. Germination is the process by which a plant grows from a seed, transpiration is the loss of water vapor from plants, and pollination is the transfer of pollen from the male reproductive organs to the female reproductive organs of plants. None of these options accurately describe the union of sperm and egg.

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8.

How many cotyledons does a dicot contain?

One
Two
Three
Four

Correct Answer

A. Two

Explanation

Dicots, also known as dicotyledons, are a group of flowering plants that typically have two cotyledons or seed leaves. Cotyledons are the embryonic leaves that provide nutrients to the developing plant before it can photosynthesize. Therefore, the correct answer is two.

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9.

During photosynthesis, carbon dioxide enters the leaf through the

Stomata
Rhizoids
Guard cells
Rhizomes

Correct Answer

A. Stomata

Explanation

During photosynthesis, carbon dioxide enters the leaf through the stomata. Stomata are small openings on the surface of leaves that allow for gas exchange. They are surrounded by specialized cells called guard cells that control their opening and closing. When the stomata are open, carbon dioxide can diffuse into the leaf, where it is used by the plant for photosynthesis. The other options, rhizoids and rhizomes, are not involved in gas exchange and do not play a role in the entry of carbon dioxide during photosynthesis.

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10.

Auxins are

Enzymes
Sugars
Hormones
Fruits

Correct Answer

A. Hormones

Explanation

Auxins are a class of plant hormones that play a crucial role in regulating plant growth and development. They are responsible for various processes such as cell elongation, root formation, apical dominance, and tropisms. Unlike enzymes, sugars, and fruits, which are not involved in hormonal regulation, auxins specifically act as signaling molecules to coordinate plant responses to environmental stimuli and internal cues. Therefore, the correct answer is hormones.

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Test On Vascular Plants

The leaf of a fern is called a

Quiz Preview

Ferns produce spores during

Plant tissue that carries food substances down from the plants leaves is called

Which of these structures is not a stem?

Angiosperms produce

Which structure produces eggs?

The union of the sperm and the egg is called

How many cotyledons does a dicot contain?

During photosynthesis, carbon dioxide enters the leaf through the

Auxins are