GCSE Biology – Transpiration

Last updated: 22/04/2020
CCEA GCSE Science – Combined science foundation Osmosis and plant transport GCSE Biology – Transpiration

Learning Objectives

-I can define the term transpiration
-I can describe how to measure transpiration
-I can explain the effect that temperature/humidity/air movement/light has on transpiration

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  3. Answered

  1. What is transpiration?

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  2. What does transpiration do?

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  3. Why is transpiration important?

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  4. Where is water lost through in a plant?

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  5. Why do plants need fresh water?

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  6. When cells have lots of water, they are

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  7. Why is it beneficial for a plant’s cells to be turgid?

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  8. Why does having stomata sunk in pits reduce transpiration?

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  9. Why does a waxy leaf cuticle reduce transpiration?

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  10. How do we measure transpiration?

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  11. Describe how we set up apparatus to measure transpiration.

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  12. What is a potometer?

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  13. What factors affect the rate of transpiration?

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  14. What happens to rate of transpiration as temperature increases?

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  15. What happens to rate of transpiration as humidity increases?

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  16. What happens to rate of transpiration as air movement increases?

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  17. What happens to rate of transpiration as light intensity increases?

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  18. Why does rate of transpiration increase as temperature increases?

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  19. Why does rate of transpiration decrease as humidity increases?

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  20. Why does rate of transpiration increase as air movement increases?

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  21. Why does rate of transpiration increase as light intensity increases?

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  22. Which feature reduces rate of transpiration?

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  23. Which feature reduces rate of transpiration?

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  24. Which feature reduces rate of transpiration?

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  25. Which feature reduces rate of transpiration?

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