LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

ECOLOGY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

In a simple food chain, small fish eat algae; bigger fish eat the smaller fish; bears eat the bigger fish. Using the above scenario, which of these would have the largest amount of energy?

A	algae
B	bears
C	big fish
D	small fish

Explanation:

Detailed explanation-1: -Big fish eat smaller fish, and the larger tuna in their turn have to be aware of their surroundings in case the ultimate ocean predator is attracted to this new artificial ‘reef’ – sharks!

Detailed explanation-2: -Great white sharks, to be exact. But the true ruler of the sea is the killer whale. Killer whales are apex predators, which means they have no natural predators. They hunt in packs, much like wolves, which are also at the top of their food chain.

Detailed explanation-3: -Fish receives 10% of this 10J= 1J. Out of 1J energy available to the fish, 10% is transferred to the next trophic level i.e. big fish. 10% of 1J is 0.1J. Hence, 0.1J of energy will be available to big fish if 10, 000J of energy is available to small algae from the sun.

There is 1 question to complete.