Question

What is human eye ?

Answer 1

Step 1: Identify the definition line.
The passage begins by stating that the human eye is a complex organ which enables us to see and interpret the world around us.

Step 2: Add key supporting detail.
It is made up of several parts (cornea, iris, pupil, lens, retina and optic nerve) that work together to receive light and send visual signals to the brain.

Step 3: Conclusion.
Thus, the human eye is a complex sense organ that helps us see and understand our surroundings by receiving light and transmitting signals to the brain.

Answer 2

Step 1: Find description in passage.
The passage mentions that the cornea is the clear outer layer of the eye.

Step 2: Explanation.
It protects the eye and helps to focus light onto the retina. Thus, it acts as a protective and light-focusing layer.

Step 3: Conclusion.
The cornea is the transparent outer covering of the eye that safeguards it and assists in focusing incoming light.

Answer 3

Step 1: Identify description.
The passage states that the iris is the coloured part of the eye.

Step 2: Explanation.
It controls the amount of light that enters the eye by adjusting the size of the pupil. When light is bright, the iris makes the pupil smaller; in dim light, it widens the pupil.

Step 3: Conclusion.
Hence, the iris is the coloured part of the eye that regulates how much light enters through the pupil.

Answer 4

Step 1: Refer to the passage.
According to the passage, the lens is a clear and curved structure inside the eye.

Step 2: Explanation.
Its main function is to focus light rays onto the retina, which helps form clear images. The curvature allows precise focusing for near and distant objects.

Step 3: Conclusion.
Therefore, the lens is a transparent, curved structure that helps focus light on the retina to produce clear vision.