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Question

How many metameres does an earthworm have?

A
100-200
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B
100-120
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C
80-120
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D
80-150
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Solution

The correct option is B 100-120
The body of an earthworm is long and cylindrical. It is divided into about 100-120 short segments or metameres which are morphologically similar. There is serial repetition of certain body organs and this is called metamerism which is a characteristic feature of all annelids.

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