What is crop?

What are crop plants?

What are crop's pests ? Suggest preventive measures to control pests.

(a) What is a trophic level in an ecosystem ? What is 'standing crop' with reference to it? (b) Explain the role of the 'first trophic level' in an ecosystem. (c) How is the detritus food chain connected with the grazing food chain in a natural ecosystem ?

What is function of crop in cockroach ?

What is the plantation crop of Brazil? What is the name given to the plantation farms?

What is the role of selection in crop improvement.

In some area, farmers who grow genetically modified (GM) corn have to make sure there is a gap between GM and non - GM crops. What is the reason for leaving a gap between the crops?