A) net primary productivity
B) gross secondary productivity
C) net secondary productivity
D) gross primary productivity
Correct Answer: D
Solution :
Plants, found in an ecosystem are known as producers, because they can prepare food for their self by the process of photosynthesis. The energy fixed by the autotrophs during photosynthesis gets incorporated into organic compounds. The rate at which organic molecules are formed in a green plant (or a population of green plants) is called gross primary productivity.
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