Question

35.
Both male and female cockroach do not have
1) anal cerci
2) three segmented thorax
3) bitting mouth parts
4) anal styles
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Answer 1

Answer:

bitting mouth parts..........

Answer 2

3) bitting mouth parts - is the correct option.

The pronotum of the mature American cockroach is reddish brown with a pale brown or yellow ring around it. Because their wings extend 4 to 8 mm beyond the tip of the abdomen, males are 4 to 8 mm longer than females. At the apex of the abdomen, both males and females have a pair of thin, jointed cerci. The cerci of male cockroaches have 18 to 19 segments, while the cerci of female cockroaches have 13 to 14 segments. Female American cockroaches do not have a pair of styli between their cerci, but males have.

Male cockroaches are the only ones with anal styles (male copulatory organs). The wind is sensitive to the anal cerci, which are sensory organs. Chitin makes up the exoskeleton of cockroaches.