Photosynthesis Quiz Questions And Answers For Grade 8

32 Questions | Total Attempts: 843

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Photosynthesis Quiz Questions And Answers For Grade 8 - Quiz

Photosynthesis is an amazing process using which plants remove carbon dioxide from the air and release oxygen. Take the Photosynthesis quiz questions and answers for Grade 8 and test your understanding about this topic. To ace this quiz, you must know about ATPs, Photosystems, electron transport, etc. Would you like to try? Read all the questions carefully and answer correctly to get the perfect score. Let's get started. If you like the quiz, do share it with your friends to help them enhance their knowledge.


Questions and Answers
  • 1. 
    Why do plants undergo photosynthesis?
    • A. 

      Because they feel like it

    • B. 

      To produce organic compounds that the plants can then use in respiration

    • C. 

      To provide food for necessary functions

    • D. 

      None of the above

  • 2. 
    Which organelle(s) is/are important for energy in plant cells?
    • A. 

      Mitochondria

    • B. 

      Chloroplasts

    • C. 

      Both a and b

    • D. 

      None of the above

  • 3. 
    Metabolism is defined as:
    • A. 

      The rate that an organism burns energy

    • B. 

      The sum of all chemical processes that occur in an organism

    • C. 

      The rate that someone burns fat

    • D. 

      None of the above

  • 4. 
    Where does all the energy for everything come from?
    • A. 

      The sun

    • B. 

      Food

    • C. 

      The earth

    • D. 

      Air

  • 5. 
    Which comes first: Photosystem I (PSI) or Photosystem II (PSII)?
    • A. 

      PSI

    • B. 

      PSII

  • 6. 
    Where do chloroplasts live?
    • A. 

      Mesophyll cells

    • B. 

      Granum

    • C. 

      Chlorophyll

    • D. 

      Mitochondria

  • 7. 
    The stroma of a thylakoid can be compared to the ___________ of a plant cell (or even animal cell)
  • 8. 
    One stack of thylakoids is called a ________.
  • 9. 
    Plants, algae, and some bacteria capture about ____% of the energy in the sunlight that reaches Earth.
  • 10. 
    Photosynthesis is the process that provides energy for all life.
    • A. 

      True

    • B. 

      False

  • 11. 
    Put these steps of photosynthesis in the correct order. 1.  Light energy is converted to chemical energy. This chemical energy is temporarily stored in ATP and NADPH, an energy carrier molecule. 2. The chemical energy (stored in ATP and NADPH) powers the formation of organic compounds, using carbon dioxide. 3. Energy is captured from sunlight.
    • A. 

      2, 1, 3

    • B. 

      3, 1, 2

    • C. 

      3, 2, 1

  • 12. 
    What is the equation for photosynthesis? (use the word "yields" for the arrow and don't put spaces before and after the plus signs. also, don't put any spaces before or after coefficients or subscript numbers) example: NA2+3CL yields whatever)
  • 13. 
    Some of the sugars that are created are used to make _____
  • 14. 
    Starch is then stored in stems or roots of the plants and can be broken down to _____ whenever it is needed.
    • A. 

      ATP

    • B. 

      Glucose

    • C. 

      NADPH

    • D. 

      None of the above

  • 15. 
    What powers metabolism?
    • A. 

      Sunlight

    • B. 

      Glucose

    • C. 

      ATP

    • D. 

      None of the above

  • 16. 
    What can a wavelength be defined as?
    • A. 

      The beginning and end of one single wave

    • B. 

      The distance between two consecutive waves

    • C. 

      The average distance a wave travels

    • D. 

      None of the above

  • 17. 
    Light-absorbing substances are called _______________
  • 18. 
    Which chlorophyll is directly involved in the light reactions?
    • A. 

      Chlorophyll a

    • B. 

      Chlorophyll b

  • 19. 
    Chlorophyll b is known as an ___________ pigment.
  • 20. 
    The pigments that produce yellow and orange fall leaf colors and the colors of many fruits, vegetables, and flowers are called _____________.
  • 21. 
    Pigments involved in photosynthesis are located in the __________ of leaf cells
  • 22. 
    Clusters of pigments are in the membranes of disk-shaped structures called _________
    • A. 

      Granum

    • B. 

      Thylakoids

    • C. 

      Photosystems

    • D. 

      ATP

  • 23. 
    Each cluster of pigments is known as a
    • A. 

      Protein

    • B. 

      Stomata

    • C. 

      Photosystem

    • D. 

      None of the above

  • 24. 
    When do the light reactions begin?
    • A. 

      When accessory pigment molecules in both photosystems absorb light

    • B. 

      When water is split by the water-splitting enzymes

    • C. 

      When sunlight hits the stroma

    • D. 

      None of the above

  • 25. 
    When light strikes a thylakoid in a chloroplast, energy is transferred to _________ in a pair of __________ molecules. (separate answers with commas, example: tigers, bears)
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