EASY
12th Tamil Nadu Board
IMPORTANT
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The ears of a mammal living in a cold area were smaller than the one living in a warm area. This is an example of:

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Important Questions on Organisms and Populations

EASY
12th Tamil Nadu Board
IMPORTANT
As per Allen's rule, mammals of cold regions conserve body heat through
EASY
12th Tamil Nadu Board
IMPORTANT
Give one example of an organism seen in deep ocean trenches.
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12th Tamil Nadu Board
IMPORTANT

Give one example of a benthic animal.

MEDIUM
12th Tamil Nadu Board
IMPORTANT
Vegetation where the annual rainfall is more than 50 inches
EASY
12th Tamil Nadu Board
IMPORTANT

Study the food chain below, correct it and convert it into a pyramid of energy.

Mulberry→Sparrow→Caterpillar→Kite.

HARD
12th Tamil Nadu Board
IMPORTANT

Comment on the following figures 1,2 and 3

A, B, C, D, G, P, Q, R, S are species.

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EASY
12th Tamil Nadu Board
IMPORTANT
Warm blooded animals of cold climate have small extremities. This was stated by
EASY
12th Tamil Nadu Board
IMPORTANT
What is ecological hierarchy? Name the levels of ecological hierarchy.