1. (i) What is a Lacrimal gland?   2. (ii) In what two ways is yellow spot different from blind spot?   3. (iii) Name an old-age eye defect. Why is it caused?   4. (iv) What is meant by 'power of accommodation of the eye'?   5. (v) Mention the characteristics of the image that falls on the retina of the eye.   6. (vi) Name the photoreceptors found in the retina of the eye.