Target Exam

CUET

Subject

Biology

Chapter

Human Reproduction

Question:

Which among the following is INCORRECT statement ?

(A) Androgen are produced by sertoli cells.

(B) Leydig cells are found in ovary .

(C) Leydig cells synthesize androgens.

(D) Spermatozoa get nutrition from sertoli cells.

Options:

(A) and (B) only 

(A) ,(C)  and (D)

(C) and (D) only 

(A) , (B) and (C)

Correct Answer:

(A) and (B) only 

Explanation:

The correct answer is Option (1) - (A) and (B) only
In adults, each testis is oval in shape, with a length of about 4 to 5 cm and a width of about 2 to 3 cm. The testis is covered by a dense covering. Each testis has about 250 compartments called testicular lobules. Each lobule contains one to three highly coiled seminiferous tubules in which sperms are produced. Each seminiferous tubule is lined on its inside by two types of cells called male germ cells (spermatogonia) and Sertoli cells. The male germ cells undergo meiotic divisions finally leading to sperm formation, while Sertoli cells provide nutrition to the germ cells. The regions outside the seminiferous tubules called interstitial spaces, contain small blood vessels and interstitial cells or Leydig cells. Leydig cells synthesise and secrete testicular hormones called androgens.