$(a)$ What is the location of the following :
$(i)$ $DNA$ in a cell
$(ii)$ Gene
$(b)$ Expand $DNA$.

The ability of a cell to divide into several cells during reproduction in $Plasmodium$ is called:

What should the temperature of the testes be relative to the body temperature for the production of sperm?

"The chromosomal number of the sexually reproducing parents and their offspring is the same." Justify this statement.

Which among the following statements are true for unisexual flowers?
$(i)$ They possess both stamen and pistil
$(ii)$ They possess either stamen or pistil
$(iii)$ They exhibit cross pollination
$(iv)$ Unisexual flowers possessing only stamens cannot produce fruits

State one function each performed by the following organs in human beings:
$(a)$ Testes
$(b)$ Prostate gland