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WJEC GCSE Biology plants and ecosystems (Unit 1) overview quiz quiz

16questions. Pick an answer and you'll see why right away.

  1. What is the word equation for photosynthesis?

  2. Where in a plant cell does photosynthesis take place?

  3. A graph of photosynthesis against light intensity levels off. This shows that:

  4. Which leaf layer carries out most photosynthesis?

  5. What does the xylem transport?

  6. Which change increases the rate of transpiration?

  7. Why are most stomata found on the lower surface of a leaf?

  8. In a food chain, a producer is:

  9. Why is energy lost at each trophic level of a food chain?

  10. Why do food chains rarely have more than four or five levels?

  11. Which process removes carbon dioxide from the air?

  12. Which bacteria convert nitrogen gas into nitrates in the soil?

  13. Decay by decomposers is fastest in conditions that are:

  14. In eutrophication, what directly causes the fish to die?

  15. Which human activity adds extra carbon dioxide and enhances the greenhouse effect?

  16. Which is a method of conservation?