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Question

Position of testis in Periplaneta americana


A
7th,8th.9th abdominal segments
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B
4th,5th,6th abdominal segments
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C
8th,9th,10th abdominal segments
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D
5th,6th abdominal segments
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Solution

The correct option is A $$4^{th}, 5^{th}, 6^{th}$$ abdominal segments
  • Cockroaches are dioecious and both sexes have well developed reproductive organs.
  •  The male reproductive system consists of a pair of testes one lying on each lateral side in the 4th - 6th abdominal segments. From each testis arises a thin vas deferens which opens into the ejaculatory duct through seminal vesicle.
  •  Hence, the Position of testis in Periplaneta americana is 4th,5th,6th  abdominal segments.
  • So, the correct answer is '4th, 5th, 6th  abdominal segments'.

Biology

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