Photosynthesis Test

25 Questions

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Photosynthesis Test

This is your chapter test on photosynthesis. Do your best!


Questions and Answers
  • 1. 
    What are carbon dioxide and water converted into as a result of photosynthesis?
    • A. 

      Glucose

    • B. 

      Oxygen and glucose

    • C. 

      Carbon dioxide

  • 2. 
    Plants capture light energy from the sun and use it to convert carbon dioxide and water into food.  This process is known as 
    • A. 

      Photosynthesis

    • B. 

      Evaporation

    • C. 

      Transpiration

  • 3. 
    Which of these describes photosynthesis?
    • A. 

      It requires energy from the sun

    • B. 

      It requires energy from food

    • C. 

      It releases energy from food

  • 4. 
    Which of the following is provided directly by the sun to plants for photosynthesis?
    • A. 

      Energy

    • B. 

      Carbon dioxide

    • C. 

      Oxygen

  • 5. 
    What is the main pigment in green plants?
    • A. 

      Chloroplasts

    • B. 

      Chlorophyll

    • C. 

      Ribosomes

  • 6. 
    During photosynthesis, producers convert energy from the sun into __________.
    • A. 

      Electrical energy

    • B. 

      Chemical energy

    • C. 

      Mechanical energy

  • 7. 
    Plants provide animals with _________________.
    • A. 

      Food and 02 (oxygen)

    • B. 

      Food

    • C. 

      Carbon dioxide

  • 8. 
    Photosynthesis could not occur without which of the following?
    • A. 

      Sunlight

    • B. 

      Glucose

    • C. 

      Oxygen

  • 9. 
    Why do some leaves turn from green to red, orange, or yellow in the fall?
    • A. 

      Chlorophyll changes colors in cool weather.

    • B. 

      Chlorophyll is broken down and is stored

    • C. 

      Chlorophyll leaks out of the leaves.

  • 10. 
    Which plant pigment traps most of the light energy used in photosynthesis?
    • A. 

      Carotene

    • B. 

      Chlorophyll

    • C. 

      Betadine

  • 11. 
    Where does CO2 (carbon dioxide) enter a leaf?
    • A. 

      Through a guard cell

    • B. 

      Through a stoma

    • C. 

      Through the cuticle

  • 12. 
    In an ecosystem, energy __________, and chemicals ____________ through
    • A. 

      Flows, cycles

    • B. 

      Cycles, flows

  • 13. 
    What are the organelles that use sunlight to produce food in the process of photosynthesis?
    • A. 

      Ribosomes

    • B. 

      Chloroplasts

    • C. 

      Vacuoles

  • 14. 
    In photosynthesis, chlorophyll traps _________________.
    • A. 

      Sunlight

    • B. 

      Carbon dioxide

    • C. 

      Oxygen

  • 15. 
    During photosynthesis, producers convert energy from the sun into __________.
    • A. 

      Chemical

    • B. 

      Mechanical

    • C. 

      Kinetic

  • 16. 
    Why does chlorophyll make plants appear green?
    • A. 

      It converges green light

    • B. 

      It absorbs green light

    • C. 

      It reflects green light

  • 17. 
     Which is the process plants use to make food?
    • A. 

      Respiration

    • B. 

      Carbon dioxide

    • C. 

      Photosynthesis

  • 18. 
    What are the organelles that use sunlight to produce food in the process of photosynthesis?
    • A. 

      Ribosomes

    • B. 

      Vacuoles

    • C. 

      Chloroplasts

  • 19. 
    Which substances are needed to make food in plants?
    • A. 

      Oxygen and water

    • B. 

      Glucose and oxygen

    • C. 

      Water and Carbon dioxide

  • 20. 
    Animal cells cannot carry out photosynthesis because they lack ___________________.
    • A. 

      Mitochondria

    • B. 

      Ribosomes

    • C. 

      Chloroplasts

  • 21. 
    In a plant cell, which organelle is the site of photosynthesis?
    • A. 

      Mitochondria

    • B. 

      Chloroplast

    • C. 

      Endoplasmic reticulum

  • 22. 
    How is the sugar produced by photosynthesis used?
    • A. 

      Plants and animals use it for food

    • B. 

      Plants only use it for food

    • C. 

      Animals only use it for food

  • 23. 
    In the above diagram, the plant captures light energy from the sun and uses it to convert carbon dioxide and water into food. The process of producing food in plants is known as:
    • A. 

      Photosynthesis

    • B. 

      Respiration

    • C. 

      Transpiration

  • 24. 
    In photosynthesis, plant cells use _____________ to trap light energy and produce glucose.
    • A. 

      Respiration

    • B. 

      Ribosomes

    • C. 

      Chlorophyll

  • 25. 
    Which of the following is provided directly by the sun to plants for photosynthesis?
    • A. 

      Carbon dioxide

    • B. 

      Oxygen

    • C. 

      Energy