A) Size of fishes become larger
B) The size of fish population become smaller
C) The size of fish population is no way connected with amount of light falling on a pond
D) Mutation will take place in fishes
Correct Answer: B
Solution :
Because in low light condition, the rate of photosynthesis in producer (algae etc.) is decreased. As a result of this activity the quantity of available food material and oxygen for consumer (fishes)are decreased. So the size of the population of consumers i.e., fishes become smaller.
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