Question

The testes of the great majority of mammals are typically enclosed in an extra abdominal sac in the scrotum. The temperature inside the scrotum is lower than that in the abdomen. What will happen if the temperature of scrotum is artificially maintained to the level of abdominal temperature?
A) The germinal epithelium will produce a large quantity of androgen secretion.
B) The germinal epithelium of the testes will divide faster, thus producing more sperms.
C) The germinal epithelium of the testes will degenerate, resulting in sterility.
D) The germinal epithelium will carry out normal spermatogenesis.

Answer 1

Hint: The testes are present outside the abdominal cavity within the pouch called scrotum. The temperature of the scrotum is around $34^\circ C$ and function of the scrotum is to protect testes and it acts as a climate controller system for testes. The temperature of the scrotum is suitable for production of sperm.

Complete answer:
Option A) The germinal epithelium will produce a large quantity of androgen secretion: Do you know testosterone is the most active and predominant testosterone and is produced by male testes. Androgen is produced by the adrenal gland and ovaries through the conversion of cholesterol.
So, option A is not correct.
Option B) The germinal epithelium of the testes will divide faster, thus producing more sperms: Do you know that for the formation of the sperm an appropriate temperature is required increase or decrease in temperature affects the formation of sperm.
So, option B is not correct.
Option C) The germinal epithelium of the testes will degenerate, resulting in sterility: Do you know that a small increase or decrease in the temperature of the testis does not destroy the germinal epithelium; however, it reduces testis weight and sperm production and brings a greater incidence of morphologically abnormal spermatids and spermatozoa and hence results in infertility.
So, option C is correct.
Option D) The germinal epithelium will carry out normal spermatogenesis: As we know increase or decrease in the temperature of the testis reduces testis weight and sperm production and brings a greater incidence of morphologically abnormal spermatids and spermatozoa and hence results in infertility.
So, option D is not correct.

So the correct answer is option C.

Note:
Scrotum is the bag of skin that holds and protects testes. The function of testes is to produce sperm and the scrotums keeps the temperature of the testes cooler which is required for production of sperm.