(a) Write the function of each of the following parts of human eye :
cornea, iris, crystalline lens, ciliary muscles
(b) Millions of people of the developing countries of the world are suffering from corneal blindness. These persons can be cured by replacing the defective cornea with the cornea of a donated eye. A charitable socity of your city has organised a compaign in your neighbourhood in order to create awareness about this fact. If you are asked to participate in this mission how would you contribute in this noble cause ?
(i) State the objective of organising such compaigns.
(ii) List two arguments which you would give to motivate the people to donate their eyes after death.
(iii) List two values which are developed in the persons who actively participate and contribute in such programmes.

Explanation

### Step-by-Step Text Solution:

**(a) Functions of the parts of the human eye:**

1. **Cornea:**
- The cornea is the transparent front part of the eye. Its main function is to focus light rays that enter the eye. It acts as a lens, bending the light to help form a clear image on the retina.

2. **Iris:**
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