....... is function of nephrocytes and urecose gland.
Reproduction
Digestion
Excretion
None
Which is characteristic of Cockroach
The nymph grow by mouthing about..... to reach the adult form
In cockroach
Which of the following statement(s) is/are correct about nervous system of cockroach ?
($i$) It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
($ii$) There are six ganglia lie in the thorax, and three in the abdomen.
($iii$) The sense organs are antennae, eyes, maxillary pulps, labial pulps and anal cerci etc.
($iv$) Each eye consists of about $5000$ hexagonal ommatidia.
What is false for the heart of cockroach?