| Assertion : Nematodes and tunicates show auxetic growth. |
| Reason : In these animals, growth occurs only by increases in size of cells and not number of cells. |
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: A
Solution :
In Auxetic category of growth, the volume of the body increases due to growth of body cells in their size with out any change in the number of cells. It involves only cell growth and no cell reproduction. It is rare type of growth and is found in a few nematodes (Ascaris), rotifers, tunicates (Herdmania) etc.
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