(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Give Reason:

Why do we see clearly in the central region of the retina?

Give Reason:

Older people require glasses to read and write.

Give Reason:

Deficiency of vitamin A causes night blindness.

Give Reason:

When you enter into a dark room from bright because of sunlight, you can not see things for a few seconds.

Differentiate between:

Short-sightedness and Long-sightedness.

Differentiate between:

Myopia and Hypermetropia.

Draw a neat labeled diagram to show how hypermetropia can be rectified.

Explain the Term: Hypermetropia

Explain the Term: Presbyopia

Explain the Term: Astigmatism

Explain the Term: Cataract

Name the following:
The defect of the human eye caused due to the uneven surface of the cornea.

Give Technical Term:
The path which responsible for protecting the eye from sweat.

Give Technical Term:
The type of lens used to correct myopia is

What type of lens is used to correct Astigmatism?

What type of lens is used to correct Hypermetropia?

Complete the following sentence with appropriate word :
An inability to focus on nearby objects due to loss of elasticity of the lens with age is called Iris.

The diagram given below represents the cross-section of the human eye:

(i) Name the parts labeled 1—12.
(ii) What is the function of the part marked ‘10’?
(iii) What would happen if part ‘5’ is damaged or cut?

Study the following diagram carefully and then answer the questions that follow. The diagram is depicting a defect of the human eye :

(i) Identify the defect shown in the diagram.
(ii) Give two possible reasons for the above defect.

Given below is a diagrammatic representation of a defect of the human eye:

(i) Identify the defect.
(ii) Mention two reasons for the above defect.
(iii) State how the defect can be rectified.
(iv) Name the part of the eye responsible for maintaining the shape of the eyeball.