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प्रश्न
The thin, transparent extension of sclerotic layer found in front of the lens is ______.
विकल्प
Cornea
Cochlea
Conjunctiva
Choroid
उत्तर
The thin, transparent extension of sclerotic layer found in front of the lens is Cornea.
संबंधित प्रश्न
Night birds have ______ cones than rods in their eyes.
Name two parts of the eye which refract light rays (or bend light rays).
Where does the greatest degree of refraction of light occur in the eye?
Give the scientific names of the following parts of the eye:
changes shape to focus a picture on the retina.
A person walking in a dark corridor enters into a brightly lit room:
State the effect on the pupil of the eye.
There are two types of light-sensitive cells in the human eye:
To what is each type of cell sensitive?
An object is moved closer to an eye. What changes must take place in the eye in order to keep the image in sharp focus?
Explain why, when it is getting dark at night, it is impossible to make out the colour of cars on the road.
Which of the following have a wider field of view?
(a) Animals having two eyes on the opposite sides of their head.
(b) Animals having two eyes at the front of their head.
Give scientific reason:
We cannot clearly see an object kept at a distance less than 25 cm from the eye.
Correct and rewrite the statements by changing the biological term that is underlined for the statement:
The part of the eye which can be donated from a clinically dead person is the Retina.
Name the following:
The innermost layer of the eye
Give Technical Term:
The cells of the retina that are sensitive to colour.
Mention, if the following statement is True or False
Cones are the receptor cells in the retina of the eye sensitive to dim light.
Match the following:
| Column - I | Column - II |
| 1. Retina | a) Path way 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 | e) Power of accommodation |
With reference to human eye, answer the following question.
What is aqueous humor?
Explain the role of the part of human eye responsible for power of accommodation of human eye.
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 | e | power of accommodation |
Name the following:
Two pigments of the sensory cells.
Name the following:
Three layers of the eye ball.
