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प्रश्न
Name the respective organs in which the following are located and mention the main function of each:
(i) Iris
(ii) Semicircular canals
उत्तर
(ii) Semicircular canals: It is located in the inner ear. These are concerned with the body equilibrium.
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संबंधित प्रश्न
Compare the following: Choroid and retina
Where is the image formed in a human eye?
How does the eye adjust to take account of an increase in brightness?
Name that part of the eye which is equivalent to the photographic film in a camera.
What is the:
near point of a normal human eye?
Name the part of our eyes which helps us to focus near and distant objects in quick succession.
Describe the working of the human eye with the help of the above diagram.
Explain why, we cannot see our seats first when we enter a darkened cinema hall from bright light but gradually they become visible.
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(b) distinguish between lights of different colours
(c) focus on objects at different distances
(d) decide which of the two objects is closer.
Mention if the following statement is true (T) or false (F) Give reason.
Short-sightedness and hyperopia are one and the same thing
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Define the following:
Blind spot
Choose the correct answer :
The rods and cones of a vertebrate retina function is to _________
Name the following:
The type of lens used for correcting myopia.
What is the nature of the image that forms on the retina?
______ of the eye is comparable to the film of a camera.
Which cells of the retina enable us to see coloured objects around us?
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 |
Which of the following is responsible for the adjustment of the size of pupil?
