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Question

Select the incorrect route(s) for the passage of sperm in the respective organisms :
I. Periplaneta americana: Testes → Vasa efferentia → Kidney → Bidder’s canal →
Urinogenital duct → Cloaca
II. Rana tigrina: Testes → Vasa efferentia → Kidney → Bidder’s canal → Urinogenital
duct → Cloaca
III. Rana tigrina: Testes → Vas deferens → Seminal vesicle → Ejaculatory duct → Male
gonopore
IV. Periplaneta americana: Testes → Vas deferens → Seminal vesicle → Ejaculatory duct → Male gonopore

A
I only
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B
I and III
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C
II and IV
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D
II only
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Solution

The correct option is B I and III
Periplaneta americana (cockroach) and Rana tigrina (frog) are dioecious and both sexes have well developed male and female reproductive systems. The correct route for the passage of sperm in the male reproductive system is:
Periplaneta americana: Testes → Vas deferens → Seminal vesicle → Ejaculatory duct → Male gonopore.

Rana tigrina: Testes → Vasa efferentia → Kidney → Bidder’s canal → Urinogenital duct → Cloaca

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