Question

The diagram shown is the lateral section of a testis of man. Study it carefully and answer the questions that follow:

(i) Label the parts 1-4.

(ii) State the functions of the parts labelled 1 and 3.

(iii) Draw a labelled diagram of a sperm.

Answer 1

(i) 

(ii) Functions:

• Vas deferens: Transports mature sperms from the epididymis towards the urethra.
• Epididymis: Stores sperms, where they mature before passing into the vas deferens.

(iii) Simple labelled sperm diagram:

The acrosome helps the sperm penetrate the ovum; the nucleus carries the haploid genetic material, the middle piece supplies energy, and the tail enables movement.