Define emasculation. How it is done ?

Define eutrophication. How the increase in organic wastes accelerates the process?

What is emasculation?

What is meant by emasculation ? How is it useful in plant breeding programme ?

The emasculation is rquired for :

Some flowers, selected for artificial hybridisation, do not require emasculation but bagging is essential for them. Give a reason.

C. ADDITIONAL QUESTIONS : Define pollination. How does it occur?