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Which of the following statement(s) is/are correct about nervous system of cockroach ?
  1. It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
  2. There are six ganglia lie in the thorax, and three in the abdomen.
  3. The sense organs are antennae, eyes, maxillary pulps, labial pulps and anal cerci etc.
  4. Each eye consists of about 5000 hexagonal ommatidia.

A. Both (i) and (iii)

B. Only (ii)

C. Both (i) and (iv)

D. All of these

Correct Answer : C.


There are three ganglia lie in the thorax, and six in the abdomen. Each eye consists of about 2000 hexagonal ommatidia.

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