Which of the following statements about the reproductive system of mal...
Understanding the Male Frog Reproductive System
Frogs, particularly Rana tigrina, possess a fascinating reproductive system. Let's analyze the statements to identify which one is NOT incorrect.
Statement Analysis
- a) The testes are paired and located near the kidneys
- This statement is correct. The testes are indeed paired and situated near the kidneys in male frogs.
- b) Vasa efferentia connect the testis to the ureter
- This statement is incorrect. Vasa efferentia actually connect the testis to the kidneys, not the ureter.
- c) The ureter acts as urinogenital duct in males
- This statement is NOT incorrect. In male frogs, the ureter does serve a dual purpose, functioning as both a urinary and genital duct, allowing for the passage of sperm and urine.
- d) Bidder's canal is present in males only
- This statement is incorrect. Bidder's canal is associated with the reproductive system of males, but it can also play a role in females.
Conclusion
The correct answer, option 'C', highlights the unique function of the ureter in male frogs. It is significant to understand that while the ureter serves as a urinogenital duct, it is essential in the reproductive process, facilitating the transfer of sperm during mating. Understanding these anatomical relationships is crucial for comprehending frog reproduction in a broader biological context.
Which of the following statements about the reproductive system of mal...
The correct answer is Option C - The ureter acts as urinogenital duct in males
In the male, sperm produced in the testes are carried by the vasa efferentia into the kidneys, and from there they pass into the ureter which opens into the cloaca; because the ureter conveys both urine and sperm in the male, it functions as a urinogenital duct.
Statement A is correct: the testes are paired and lie close to the kidneys on the dorsal body wall.
Statement B is incorrect: the vasa efferentia connect the testis to the kidneys (they do not directly join the ureter); sperm reach the ureter only after passing through the renal region.
Statement D is incorrect: the Bidder's canal is not a structure found only in males; it is associated with the female reproductive tract and therefore the statement claiming male-only presence is wrong.
Topic in NCERT: Excretory system
Line in NCERT: "two ureters emerge from the kidneys in the male frogs. the ureters act as urinogenital duct which opens into the cloaca."