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प्रश्न
With reference to the functioning of the eye, answer the question that follow:
Name the cells of the retina and its respective pigments which get activated in the dark.
उत्तर
In the dark: Cells - rod cells, Pigment - rhodopsin
संबंधित प्रश्न
List the parts of the human eye that control the amount of light entering into it. Explain how they perform this function.
Write short notes on the following: Retina
How does the eye regulate the amount of light that falls on the retina?
The optical prescription for a pair of spectacles is :
Right eye : −3.50 D
Left eye : −4.00 D
Which is the weaker eye?
What is the principal function of the eye-lens?
What is the least distance of distinct vision for a normal human eye?
Fill in the following blank with suitable word:
The part of eye sensitive to light is...................
Describe and explain, how a normal eye can see objects lying at various distances clearly.
If you walk from a dark room into sunlight and back again into dark room, how would your pupils alter in size? What makes this happen?
State whether the following statement is true or false:
Rabbit has eyes which look sideways.
Name the following:
Short sightedness.
What are the functions of tears?
Differentiate between:
Vitreous humour and Aqueous humour.
Complete the following sentence with appropriate Word
The part of the human eye where rod cells and cone cells are located is the:
Long answer question
Draw the neat labelled diagram of the Sectional view of the human eye.
For the normal human eye, the near point is at ___________ cm.
Write the name.
The fleshy screen behind cornea.
Write in proper sequence the names of all the parts of the human eye through which the light rays coming from an object pass before they form an image on the retina.
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 |
Write the main functional activity of the following structure.
Ciliary body and suspensory ligament
