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Question

Dorsal pores of Earthworm do not occur in the region of

A
First eleven and last annulus
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B
14-16 annuli
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C
100-110 annusli
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D
26-40 segments
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Solution

The correct option is A First eleven and last annulus
In earthworm, minute dorsal pores are present one in each inter segmental groove in the mid dorsal surface after the 12 segment to the last 2 nd segment. Coelomic fluid released out through these pores kills harmful microbes such as bacteria.
So, the correct answer is 'First eleven and last annulus'.

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