Name two plants which are usually propagated by artificial propagation methods. Name the method of artificial propagation used in each case.

What is meant by the term 'artificial propagation of plants' ?

Name three common methods which are used for the artificial propagation of plants.

Describe the layering method for the artificial propagation of plants. Illustrate your answer with the help of a labelled diagram. Name any five plants which are propagated by the layering method.

What is meant by the term 'fission' as used in biology ?