Class 12th Biology 2013 Set1 Delhi Board Paper Solution
Question 19
Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions.
(a) Acrosome
(b) Nucleus
(c) Middle piece
Answer
Function of Acrosome -
It releases various chemicals like hyalu ronidase and acrosin which helps sperm in fusing with egg cell.
Function of Nucleus -
It stores the genetic information. It carries 23 chromosomes, out of which one is sex chromosome (either X or Y). Thus, it is responsible for determining the sex of the ind ividual.
Function of Middle piece -
T he middle piece contains several mitochondria, which produce energy for the motility of the sperm
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