In a female cockroach,the number of sternites | vedclass

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(B) In a female cockroach,the abdomen consists of $10$ segments. In females,the $7^{th}$ sternum is boat-shaped and together with the $8^{th}$ and $9^

Vedclass · Accepted Answer

$7$

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(B) In a female cockroach,the abdomen consists of $10$ segments. In females,the $7^{th}$ sternum is boat-shaped and together with the $8^{th}$ and $9^{th}$ sterna forms a brood or genital pouch. Although there are $10$ abdominal segments,the sternites are visible as $7$ in females because the $8^{th}$ and $9^{th}$ sterna are modified to form the genital pouch and are not externally visible as distinct segments in the same way as the preceding ones. Therefore,the number of visible sternites in the female cockroach abdomen is $7$.

In a female cockroach,the number of sternites in the abdomen is .......?

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