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प्रश्न
With reference to human eye answer the question that follow:
Name the part of the eye associated with keeping the lens moist and protecting it from physical shock.
उत्तर
Aqueous humour
संबंधित प्रश्न
Write the function of the following part of the human eye: ciliary muscles
Answer briefly:
How do you perceive the colour of an object?
What is the least distance of distinct vision for a normal human eye?
What is the range of vision of a normal human eye?
What happens to the size of pupil of our eye (i) in dim light (ii) in bright light?
The human eye possesses the power of accommodation. This is the power to:
(a) alter the diameter of the pupil as the intensity of light changes
(b) distinguish between lights of different colours
(c) focus on objects at different distances
(d) decide which of the two objects is closer.
The descriptions of five kinds of images are given below:
(a) diminished and virtual
(b) enlarged and real
(c) enlarged and erect
(d) real and inverted
(e) virtual and the same size
Which one of these describes the image formed:
(i) on the retina of the eye?
(ii) by a magnifying glass?
(iii) by a convex driving mirror on a car?
(iv) by a plane mirror?
(v) on the screen of a slide projector?
Name the following:
The part of the eye responsible for its shape.
Name the following:
Short sightedness.
Choose the correct answer.
In the chemistry of vision, the photosensitive substance is _________________
Differentiate between:
Retina and Choroid.
Choose the Odd One Out:
Write the name.
The screen with light sensitive cells in human eye.
______ is the structural and functional unit of living organisms.
Given below is a diagram depicting a defect of the human eye. Answer the questions that follow:
- Give the scientific term for the defect.
- Mention one possible reason for the defect.
- What type of lens can be used to correct the defect?
Which part of the eye gets affected if someone is suffering from cataract? How is it treated?
Match the following:
| Column - I | Column - II | ||
| 1 |
Retina |
a | Pathway of light |
| 2 | Pupil | b |
Far point comes closer |
| 3 | Ciliary muscles | c |
near point moves away |
| 4 | Myopia | d | Screen of the eye |
| 5 | Hypermetropia | f | Power of accommodation |
Name the following:
The layer of the wall of the eye-ball that corresponds to the black lining of the box of a camera
Match the terms in column I with those in column II and write down the matching pairs.
| Column I | Column II | ||
| (i) | Conjunctiva | (a) | Viral infection |
| (ii) | Cornea | (b) | Ciliary body |
| (iii) | Choroid | (c) | Spiral-shaped |
| (iv) | Cochlea | (d) | Transparent epithelium |
| (v) | Conjunctivitis | (e) | Suspensory ligament |
| (f) | Contains melanin | ||
| (g) | Transparent but appears black |
Name the following:
Two pigments of the sensory cells.
