Question

Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions.

(i) Acrosome 

(ii) Nucleus 

(iii) Middle piece 

OR 

Draw a diagram of a human sperm. Label only those parts along with their functions, that assist the sperm to reach and gain entry into the female gamete.

Answer 1

Structure of a sperm 

(i) Acrosome: Contains hydrolytic enzymes that help in dissolving membranes of the ovum for fertilisation. 

(ii) Nucleus: Carries genetic material of male. 

(iii) Middle piece: Contains a number of mitochondria that provide energy for the movement of the tail that facilitate sperm motility.