Question

Consider the following statements each with two blanks.
(A) Seminiferous tubules produce (i) while Leydig's cells produce (ii).
(B) In females, urethra is small and conducts (iii) while in males it conducts urine and (iv).
(C) The process Of formation of spermatozoa from spermatogonia is called (v) and the process of maturation of spermatids into spermatozoa is called (vi).
Which one of the following options, gives the correct fill ups for the respective blank numbers from (i) to (vi) in the statements?

• A. (i)-spermatozoa, (ii)-testosterone,
  (v)-spermatogenesis, (vi)-spermiogenesis
• B. (i)-testosterone, (ii)-spermatozoa, (iii)-urine, (iv)-semen
• C. (i)-estrogen, (ii)-testosterone, (v)-spermiogenesis, (vi)-spermatogenesis
• D. (iii)-urine, (iv)-semen, (v)-spermiogenesis, (vi)-spermatogenesis

Answer 1

The correct option is A (i)-spermatozoa, (ii)-testosterone,

(v)-spermatogenesis, (vi)-spermiogenesis
The seminiferous tubules are the location of the production of spermatozoa or sperms in the testicular lobule. The Leydig cells (interstitial cells) outside the seminiferous tubule synthesize and secrete testicular hormones called androgens or testosterone. Spermatogenesis is the process of immature male germ cells (spermatogonia) develop into mature sperms or spermatozoa. After this process, the conversion of the four equal haploid spermatids into spermatozoa (sperms) is called spermiogenesis.

So, the correct option is '(i)-spermatozoa, (ii)-testosterone, (v)-spermatogenesis, (vi)-spermiogenesis'.