The testes are situated outside the abdominal cavity within a pouch called scrotum. This is necessary as:

1. The scrotum can contain lengthy ducts for the transfer of sperms

2. Scrotum helps in maintaining the low temperature of the testes necessary for spermatogenesis

3. Scrotum reduces the pressure around testes necessary for spermatogenesis

4. Scrotum can store huge amounts of sperms

Match column I with column II and select the correct option using the codes given below

    Column 1                             Column II

A. Mons pubis                  1. Embryo formation

B. Antrum                        2. Sperm

C. Trophectoderm            3. Female external genitalia 

D. Nebenkern                   4. Graafian follicle

Codes

      A      B     C       D

(a)  3      4     2       1

(b)  3      4     1       2

(c)  3      1     4       2

(d)  1      4     3       2

The shared terminal duct of the reproductive and urinary system in the human male is 

1. Urethra

2. Ureter

3. Vas deferens

4. Vasa efferentia

The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for

Assertion   :       In human male, testes are extra-abdominal and lie in scrotal sacs.

Reason      :       Scrotum acts as thermoregulator and keeps testicular temperature lower by 2°C normal spermatogenesis.