Water requirement of crops is the amount of water needed for:

Which gases contribute primarily to the formation of acid rain?

Pteridophyta are also called: 

Which vegetable is grown by transplanting seedlings:

Honey-comb structure is found in

Which nutrient is beneficial for crop growth?

Blue chaff disease of oats is due to deficiency of:

Consider the following statements regarding chrysanthemum-

(A). Corms are used for propagation

(B) Y2K is a variety of chrysanthemum

The carbon dioxide concentration in the atmosphere is:

NPV refers to............................?

In tobacco crop, the site for synthesis of nicotine is