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Read the following statements regarding Periplaneta americana and choose the correct statements.
a) The nervous system consists of segmental ganglia joined by longitudinal connectives.
b) Blood flows from the anterior end to the posterior end of the heart.
c) A pair of thread-like antennae arising from membranous sockets lying in front of eyes.
d) Vagina opens into the spermatheca through female gonophore.
e) The openings of spiracles are regulated by sphincters.

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a, b only

a, c and e only

c, d only

b, c and d only

answer is C.

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Detailed Solution

Blood flows from the posterior end to the anterior end of the heart in cockroach.

Vagina opens into the genital chamber through female gonophore.

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