Expand the following:
DDT
Dichloro diphenyl trichloroethane
(a) Describe the procedure of hybirdisation in plants.
(b) Name the causative agent and the main preventive measure for each of the following diseases:
(i) Amoebiasis
(ii) Rabies
(iii) Pneumonia
(c) What is manure? Explain any two types of manures.
Elaborate the following :
VAM
Give reasons for the following:
Nitrogenous fertilisers are not applied in fields where leguminous crops grow.