The diagram given below shows a section of the human ovary.

(a) Name the process for the release of the part labelled 1.

(b) Write the name of the structure marked 2.

Draw a neat, labelled diagram of a chloroplast.

Which parts of the ear are responsible for:

(a) Static equilibrium?

(b) Dynamic equilibrium?

Mention two structural differences between an artery and a vein.