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Question

When volume of the body increases due to increase in the volume of cells, not in the number of cells then it is called auxetic growth, such growth is found in

A
Lizards
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B
Men
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C
Frogs
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D
Nematodes
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Solution

The correct option is D Nematodes
Auxesis refers to growth from an increase in cell size rather than an increase in the number of cells. Auxetic growth occurs in certain tissues, such as muscle, of the higher animals as well as in some organisms, such as nematodes, tunicates, and rotifers. In plant physiology, an auxetic substance will tend to increase cell growth without any cell division. Auxins are auxetic plant hormones.

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