The figure given below represents surgical method of contraception. Study the figure and answer the questions that follows.

(a) Name the surgical method of contraception shown in figure.

(b) Define method given in (a).

(c) Identify the label 'A'.

Give the exact location of alleles.

Name the type of cell division that occurs during:

(a) Growth of shoot

(b) Formation of pollen grain

Give two differences between hormonal control and nervous control.