Suggest some preventive measures of the diseases of poultry birds.

Name Two types of animal feed and write their functions.

What would happen if poultry birds are larger in size and have no summer adaptation capacity ?In order to get small sized poultry having summer adaptability, what methods will employed?

The figure shows two crop fields (plots A and B) have been treated by manures and chemical fertilizers, respectively, keeping other environmental factors same. Observe the graph and answer the following questions:

(i) Why does plot B shows sudden increase and then gradual decrease in yield?

(ii) Why is the highest peak in plot A graph slightly delayed?

(iii) What is the reason for the different pattern of the two graphs.

Beekeeping known as