Science Quiz For Grade 3
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Get ready for this Science quiz for grade 3 that we have made for you. Living things are those that display the characteristics that include having an organized structure, being made up of a cell or cells, and requiring energy to survive or sustain its existence. Take this interesting quiz designed for a third grader and get to know more about living things. Have fun, and please leave a comment!
Questions and Answers
- 1.
When living things create more of their own kind, we call it...
- A.
Chloroplasts
- B.
Having babies
- C.
Reproducing
- D.
Dancing
Correct Answer
C. ReproducingExplanation
Living things create more of their own kind through the process of reproduction. Reproduction is the biological process by which new individuals of the same species are produced, ensuring the continuation of the species. It involves the production of offspring, either sexually or asexually, depending on the organism. Chloroplasts are organelles found in plant cells that are responsible for photosynthesis, not reproduction. Having babies is a colloquial term for human reproduction. Dancing is a form of artistic expression and has no direct relation to the process of creating more of one's own kind.Rate this question:
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- 2.
An environment is...
- A.
When you are in an environment
- B.
Where living things live and their surroundings
- C.
The sky
- D.
A school
Correct Answer
B. Where living things live and their surroundingsExplanation
The correct answer is "Where living things live and their surroundings." This answer accurately defines an environment as a place where living things reside and their surrounding conditions. It encompasses the concept of an ecosystem, including both biotic (living organisms) and abiotic (non-living factors) components. The other options, such as "the sky" or "a school," do not fully capture the comprehensive definition of an environment.Rate this question:
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- 3.
What was the name of the scientist that first saw cells by looking at a cork under a microscope?
- A.
Robert Hooke
- B.
Robby Cook
- C.
Ray Henry
- D.
Ronald McDonald
Correct Answer
A. Robert HookeExplanation
Robert Hooke is the correct answer because he was the scientist who first observed cells by examining a thin slice of cork under a microscope. In 1665, Hooke published his findings in a book called "Micrographia," where he described the cells he saw as small, box-like structures resembling the cells of a monastery. His discovery of cells revolutionized the field of biology and laid the foundation for the study of cell biology.Rate this question:
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- 4.
Both plants and animal cells have...
- A.
Cell wall
- B.
Cell membrane, nucleus, and cytoplasm
- C.
Chloroplast
- D.
A heart
Correct Answer
B. Cell membrane, nucleus, and cytoplasmExplanation
Both plants and animal cells have a cell membrane, nucleus, and cytoplasm. The cell membrane is a protective barrier that regulates the movement of substances in and out of the cell. The nucleus is the control center of the cell, containing the genetic material and directing cellular activities. The cytoplasm is a gel-like substance that fills the cell and houses various organelles. While plants also have a cell wall and chloroplasts, these are not present in animal cells. A heart, on the other hand, is a specialized organ found only in animals and is not a characteristic of cells.Rate this question:
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- 5.
Plants need which of the following to live?
- A.
Oxygen
- B.
Air, water, minerals, and sunlight
- C.
Moonlight
- D.
Soil, water, shade, and food
Correct Answer
B. Air, water, minerals, and sunlightExplanation
Plants need air, water, minerals, and sunlight to live. Air is necessary for respiration and the exchange of gases. Water is essential for photosynthesis, nutrient uptake, and maintaining turgidity. Minerals are required for various metabolic processes and growth. Sunlight is crucial for photosynthesis, which allows plants to convert light energy into chemical energy. Therefore, all of these elements are vital for the survival and growth of plants.Rate this question:
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- 6.
The purpose of a stem is to...
- A.
It is prickly, so people don't pick it
- B.
It does nothing
- C.
It protects the plant from being eaten by animals
- D.
Provide the plant with support and carries minerals and water from the roots
Correct Answer
D. Provide the plant with support and carries minerals and water from the rootsExplanation
The purpose of a stem is to provide the plant with support and carry minerals and water from the roots. The stem acts as a structural support system, keeping the plant upright and allowing it to grow towards the sunlight. Additionally, the stem contains vascular tissues, such as xylem and phloem, which transport water and nutrients throughout the plant.Rate this question:
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- 7.
Why are leaves green?
- A.
Because it's hereditary
- B.
Because of chlorophyll
- C.
Because they have died that color
- D.
Because I said so
Correct Answer
B. Because of chlorophyllExplanation
Leaves are green because of chlorophyll. Chlorophyll is a pigment found in the chloroplasts of plant cells, and it plays a crucial role in photosynthesis. It absorbs sunlight, particularly in the blue and red regions of the spectrum, while reflecting green light. This is why leaves appear green to our eyes. Chlorophyll is responsible for capturing light energy and converting it into chemical energy, which is used to produce glucose and oxygen through photosynthesis. Therefore, the presence of chlorophyll in leaves is the main reason behind their green color.Rate this question:
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- 8.
Plants bend...
- A.
Away from sunlight
- B.
Toward sunlight
- C.
Whatever way they want
- D.
Toward water
Correct Answer
B. Toward sunlightExplanation
Plants bend toward sunlight because they undergo a process called phototropism. This is a natural response to light, where plants grow and bend in the direction of the light source. The bending occurs because the plant hormone auxin accumulates on the shaded side of the stem, causing cells to elongate and the plant to curve towards the light. This allows plants to maximize their exposure to sunlight, which is essential for photosynthesis and overall growth and development.Rate this question:
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- 9.
A new seed looks like its parents because of
- A.
Heredity
- B.
The way God made it
- C.
Just by chance
- D.
Because I said so
Correct Answer
A. HeredityExplanation
Heredity is the correct answer because it refers to the passing down of traits from parents to offspring through genetic information. In the context of seeds, heredity explains why a new seed looks similar to its parents, as it inherits genetic material that determines its characteristics. This process ensures the continuity of species and the transmission of specific traits from one generation to the next.Rate this question:
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- 10.
What are the two types of plants that produce seeds?
- A.
Animal and plant cells
- B.
Cactus and flowers
- C.
Flowering and conifer
- D.
Trees and moss
Correct Answer
C. Flowering and coniferExplanation
The correct answer is flowering and conifer. Flowering plants, also known as angiosperms, produce seeds enclosed within a fruit. They are the most diverse group of plants and include trees, shrubs, and herbs. Conifers, on the other hand, are a group of plants that produce seeds in cones. They are typically evergreen and include trees such as pines, spruces, and firs. Both flowering and conifer plants have evolved specialized structures for seed production and dispersal, making them the two main types of plants that produce seeds.Rate this question:
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