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Class 12 Biology Practice Test: Ecosystem - Productivity
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Class 12 Biology Practice Test: Ecosystem - Productivity
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21 Questions

1. What are the two types of primary productivity?
2. What is NPP equal to?
3. Which of the following contributes to the highest rate of primary productivity?
4. What is the balance between photosynthesis and respiration and other plant losses as death referred to?
5. What is the available biomass for the consumption of heterotrophs?
6. What is the rate of production of new organic matter by heterotrophic organisms (consumers) called?
7. What is a frog that feeds on insects example of?
8. Which of the following is a unit of productivity?
9. Which of the following is estimated in either the photosynthetic number or chlorophyll content?
10. How much is the productivity of landmass?
11. By what letter is the gross primary productivity designated?
12. Which of the following is a unit of primary productivity?
13. On whom does the primary productivity depend on?
14. What is the rate of storage of organic matter not used by consumers called?
15. How much of Earth’s surface is occupied by oceans?
16. How much is the productivity of oceans?
17. What is the approximate amount of the annual net primary productivity of the whole biosphere?
18. What is the rate at which solar energy is converted and stored by the producers per unit area over a time period called?
19. By what letter is the net primary productivity designated?
20. Which of the following is a unit of net productivity?
21. What is the rate of biomass production called?

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