Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Symptoms of ageing in humans can be studied at which of these following levels? (1) At cellular level (2) At or ganismic level (3) At extracellular level (4) Ac ecosystem levelA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: A
Solution :
Symptoms of ageing can be studied at these three different levels.
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