6th Grade Science Quiz On Photosynthesis

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  • 1/20 Questions

    Plants make their own food using energy that comes from the ____________________

    • Sunlight
    • Air
    • Moisture
    • None of the above
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About This Quiz


Photosynthesis is how green plants use sunlight to produce foods from carbon dioxide and water. This "6th-grade science quiz on photosynthesis" will help you test your understanding of the concept. Did you know that Photosynthesis is also in charge of balancing oxygen and carbon dioxide amounts in the atmosphere? Plants absorb carbon dioxide from the air and release oxygen. If you are keen on discovering more about photosynthesis, you should try this quiz. If you like the quiz, do share it with your friends and family. All the best!

6th Grade Science Quiz On Photosynthesis - Quiz

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  • 2. 

    The ______________ powers the process of photosynthesis.

    • Sunlight

    • Oxygen

    • Nitrogen

    • Hydrogen

    Correct Answer
    A. Sunlight
    Explanation
    Sunlight is the correct answer because it is the primary source of energy for the process of photosynthesis. During photosynthesis, plants use sunlight to convert carbon dioxide and water into glucose and oxygen. This process is essential for plants to produce their own food and release oxygen into the atmosphere. Without sunlight, photosynthesis cannot occur, and plants would not be able to survive.

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  • 3. 

    What happens during photosynthesis?

    • The cell uses oxygen to make food

    • The cell uses the energy in sunlight to make food

    • The cell uses glucose to make oxygen

    • None of the above

    Correct Answer
    A. The cell uses the energy in sunlight to make food
    Explanation
    During photosynthesis, the cell uses the energy in sunlight to make food. This process occurs in the chloroplasts of plant cells, where chlorophyll captures sunlight and converts it into chemical energy. This energy is then used to convert carbon dioxide and water into glucose (food) and oxygen. The glucose is stored for later use, while the oxygen is released into the atmosphere.

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  • 4. 

    Plants use energy from the sun to produce ________________ and sugars.

    • Oxygen

    • Carbon dioxide

    • Nitrogen

    • Ammonia

    Correct Answer
    A. Oxygen
    Explanation
    Plants use energy from the sun to undergo photosynthesis, a process in which they convert carbon dioxide and water into oxygen and sugars. Oxygen is produced as a byproduct of photosynthesis, while sugars are synthesized and stored as a source of energy for the plant. Therefore, the correct answer is oxygen.

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  • 5. 

    The two products of photosynthesis are _______________ and  ____________

    • Sugar, oxygen

    • Oxygen, carbon di oxide

    • Oxygen, ammonia

    • Oxygen, hydrogen

    Correct Answer
    A. Sugar, oxygen
    Explanation
    During the process of photosynthesis, plants use sunlight, water, and carbon dioxide to produce glucose (sugar) and oxygen. Glucose is a type of sugar that serves as a source of energy for the plant, while oxygen is released into the atmosphere as a byproduct. Therefore, the correct answer is "sugar, oxygen".

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  • 6. 

    Chloroplasts contain a pigment called __________________ that captures the energy in light.

    • Chlorophyll

    • Photosynthesis

    • Plastids

    • Stroma

    Correct Answer
    A. Chlorophyll
    Explanation
    Chloroplasts contain a pigment called chlorophyll that captures the energy in light. Chlorophyll is a green pigment that is essential for photosynthesis, the process by which plants convert sunlight into chemical energy. It absorbs light energy and uses it to drive the chemical reactions that convert carbon dioxide and water into glucose and oxygen. Without chlorophyll, plants would not be able to perform photosynthesis and would not be able to produce food or release oxygen into the atmosphere.

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  • 7. 

    Photosynthesis and respiration form a cycle that keeps the levels of _____________ and carbon dioxide fairly constant in the atmosphere.

    • Oxygen

    • Hydrogen

    • Nitrogen

    • Methane

    Correct Answer
    A. Oxygen
    Explanation
    Photosynthesis is the process by which plants convert carbon dioxide and sunlight into oxygen and glucose, while respiration is the process by which organisms use oxygen to break down glucose and produce carbon dioxide. This cycle ensures that the levels of oxygen and carbon dioxide in the atmosphere remain relatively constant. Therefore, the correct answer is oxygen.

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  • 8. 

    Almost all the plants depend on the process of _____________________ to supply them with the energy they need.

    • Photosynthesis

    • Transpiration

    • Respiration

    • Glycolysis

    Correct Answer
    A. Photosynthesis
    Explanation
    Photosynthesis is the process by which green plants and some other organisms use sunlight to convert carbon dioxide and water into glucose and oxygen. This glucose is then used as a source of energy by living things through cellular respiration. Therefore, almost all living things depend on the process of photosynthesis to supply them with the energy they need. Transpiration is the process by which water is lost from plants, respiration is the process of releasing energy from glucose, and glycolysis is the first step in cellular respiration.

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  • 9. 

    A heterotroph is an organism that cannot make its own food.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A heterotroph is an organism that relies on consuming other organisms or organic matter for energy and nutrients, as they are unable to produce their own food through photosynthesis or chemosynthesis. Therefore, it is correct to say that a heterotroph cannot make its own food, making the answer "True".

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  • 10. 

    Colored chemical compounds that capture light are called_____________

    • Pigment

    • Stomata

    • Petal

    • Staples

    Correct Answer
    A. Pigment
    Explanation
    Colored chemical compounds that capture light are called pigments. Pigments are responsible for giving color to various objects, such as flowers, fruits, and paintings. They absorb certain wavelengths of light and reflect others, resulting in the perception of color. Pigments are widely used in industries such as art, cosmetics, and textiles to achieve desired hues and shades.

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  • 11. 

    If an organism is an autotroph, it will get its energy from the sun ______________

    • Directly

    • Indirectly

    • Both directly and indirectly

    • None of the above

    Correct Answer
    A. Directly
    Explanation
    Autotrophs are organisms that can produce their own food using energy from the sun through a process called photosynthesis. They have the ability to convert sunlight into chemical energy, which they can then use for growth and other metabolic processes. Therefore, autotrophs obtain their energy directly from the sun.

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  • 12. 

    How does photosynthesis benefit heterotrophs?

    • It adds carbon dioxide to the air

    • It creates food that they can eat

    • It eliminates harmful sugars

    • Parenchyma cells

    Correct Answer
    A. It creates food that they can eat
    Explanation
    Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into glucose (food) and oxygen. Heterotrophs, such as animals and humans, cannot produce their own food and rely on consuming other organisms for energy. Therefore, photosynthesis is beneficial to heterotrophs as it creates food (glucose) that they can consume and obtain energy from.

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  • 13. 

    Small openings called ____________________ allow carbon dioxide to enter a leaf.

    • Stomata

    • Pores

    • Leaves

    • Stem

    Correct Answer
    A. Stomata
    Explanation
    Stomata are small openings found on the surface of leaves that allow carbon dioxide to enter the leaf. These openings can be controlled by the plant to regulate the exchange of gases, including carbon dioxide and oxygen, with the environment. The stomata open during the day to allow carbon dioxide in for photosynthesis, and close at night to prevent excessive water loss. Therefore, stomata are the correct answer to the question.

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  • 14. 

    Carbon dioxide enter plants through the

    • Pigments

    • Chloroplasts

    • Stomata

    • Bark

    Correct Answer
    A. Stomata
    Explanation
    Stomata are small openings on the surface of plant leaves that allow for the exchange of gases, including carbon dioxide. These openings are surrounded by specialized cells called guard cells, which can open and close the stomata to regulate the entry and exit of gases. Carbon dioxide enters plants through the stomata during a process called photosynthesis, where it is used by the plant to produce glucose and oxygen. Chloroplasts are the organelles responsible for photosynthesis, while pigments are molecules that absorb light energy for photosynthesis. Bark, on the other hand, is the protective outer covering of tree trunks and branches and does not play a direct role in gas exchange.

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  • 15. 

    Plants use energy from the sun to produce carbon dioxide and sugars.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Plants use energy from the sun to produce oxygen and sugars through the process of photosynthesis. They do not produce carbon dioxide as it is a waste product of respiration. Therefore, the given statement is false.

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  • 16. 

    What captures energy from sunlight during photosynthesis?

    • Solar cells

    • Stomata

    • Chlorophyll and other pigments

    Correct Answer
    A. Chlorophyll and other pigments
    Explanation
    Chlorophyll and other pigments capture energy from sunlight during photosynthesis. These pigments are located in the chloroplasts of plant cells and are responsible for absorbing light energy. This energy is then used to convert carbon dioxide and water into glucose and oxygen through a series of chemical reactions. Solar cells, on the other hand, are devices that convert sunlight directly into electricity and are not involved in the process of photosynthesis. Stomata, on the other hand, are small openings on the surface of leaves that regulate gas exchange and do not capture energy from sunlight.

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  • 17. 

    What are the products of photosynthesis?

    • Carbon dioxide and Water

    • Oxygen and Water

    • Oxygen and Sugars

    • Only oxygen

    Correct Answer
    A. Oxygen and Sugars
    Explanation
    The process of photosynthesis in plants produces oxygen and sugars (specifically glucose) as its main products. During photosynthesis, plants convert carbon dioxide and water into glucose, which they use for energy, and oxygen, which is released as a byproduct. The other options either list incorrect products or omit the crucial sugar component.

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  • 18. 

    The two raw materials in photosynthesis are ___________________ and ______________

    • Carbondioxide, water

    • Oxygen, carbondioxide

    • Carbondioxide, oxygen

    • Water, ammonia

    Correct Answer
    A. Carbondioxide, water
    Explanation
    Photosynthesis is the process by which plants convert sunlight into energy. The two raw materials required for this process are carbon dioxide and water. Carbon dioxide is obtained from the air through tiny pores called stomata, while water is absorbed by the roots from the soil. These raw materials are then used by plants, along with sunlight and chlorophyll, to produce glucose (a form of sugar) and oxygen as a byproduct. Therefore, the correct answer is carbon dioxide and water.

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  • 19. 

    Photosynthesis and respiration form a cycle that keeps the levels of water and carbon dioxide fairly constant in the atmosphere.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Photosynthesis and respiration do not form a cycle that keeps the levels of water and carbon dioxide fairly constant in the atmosphere. While photosynthesis removes carbon dioxide and releases oxygen, respiration does the opposite by consuming oxygen and producing carbon dioxide. This process creates a balance between the two gases but does not maintain a constant level. Additionally, water levels in the atmosphere are regulated through the water cycle, which involves evaporation, condensation, and precipitation. Therefore, the statement is false.

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  • 20. 

    If an organism is a heterotroph, it will get its energy from the sun _______________

    • Indirectly

    • Directly

    • Both directly and indirectly

    • None of the above

    Correct Answer
    A. Indirectly
    Explanation
    If an organism is a heterotroph, it means that it cannot produce its own energy through photosynthesis like autotrophs do. Instead, heterotrophs obtain their energy by consuming other organisms. This energy is originally derived from the sun, but it is obtained indirectly through the food chain. Therefore, the correct answer is "indirectly".

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  • Current Version
  • Dec 13, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 20, 2011
    Quiz Created by
    Tylaha
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