What approximate value should come in the place of (?)

Azolla is used in cultivation of:

The part of the wing which is triangular in shape and has the humeral, apical, and anal angles is known as

Conversion of organic form of nitrogen into inorganic form is refer to as………………..

Curry leaf is 

Scientific name of desert locust is _______:

The Black soil which are found in the area of Maharashtra, Gujrat, M.P. have the dominant clay mineral i.e.

Which is the most suitable method for preserving flowers with high moisture content like roses and carnations?

Harvest index of 19% (lowest among pulses) is observed in which crop? 

Which among the following fungicides is non-systemic?

Dendrobium orchid  belongs to the family