Q.

In cockroach, how many of the following structures are sensory in function?Antennae, eyes, maxillary palps, labial palps, anal cerci.

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a

5

b

4

c

3

d

2

answer is A.

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Detailed Solution

In cockroach, the sense organs are antennae, eyes, maxillary palps, labial palps, anal cerci, etc. Antennae are mainly tactile and olfactory. Maxillary and labial palps are olfactory and gustatory. Anal cerci bear chordotonal organs which are sensitive to sound vibrations.
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