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Question

In Hydra, new nematocysts develop from

A
Cnidocils
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B
Glandular cells
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C
Germ cells
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D
Interstitial cells
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Solution

The correct option is B Interstitial cells
Nematocysts are the stinging cells present on the tentacles in the body of Hydra. These cells develop from the unspecialised interstitial cells. As soon as the hydra discharges the toxin present in the stinging cell, the cell becomes useless. The interstitial cells have the ability to quickly move to the tentacles and start the process of development of nematocysts.
Therefore, the correct answer is option D.

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