Give reasons

Three small bones of ear ossicles are advantageous as compared to single bone for hearing;

Give reasons:

The blind spot is considered as an 'area of no vision'.

Answer the following:

Mention the characteristic of the image that falls on the retina of the eye.

With reference to the functioning of the eye, answer the question that follows:

What is the shape of lens during :- Near vision

With reference to the functioning of the eye, answer the question that follows:

What is the shape of lens during :-Distant vision