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प्रश्न
Name the following:
The most sensitive region of the retina.
उत्तर
Fovea centralis or macula
APPEARS IN
संबंधित प्रश्न
Differentiate between: Rods and cones
Where does the greatest degree of refraction of light occur in the eye?
How does the convex eye-lens differ from the ordinary convex lens made of glass?
List, in order, the parts of the eye through which light passes to reach the retina.
How does the eye change in order to focus on near or distant objects?
(a) The lens moves in or out
(b) The retina moves in or out
(c) The lens becomes thicker or thinner
(d) The pupil gets larger or smaller
Out of animals of prey and predators, which have their eyes:
on the opposite sides of their head?
Name two animals having eyes:
one the sides of the head.
The animals of prey have:
(a) two eyes at the front
(b) two eyes at the back
(c) two eyes on the sides
(d) one eye at the front and one on the side
Mention if the following statement is true (T) or false (F) Give reason.
Blind spot is called so because no image is formed on it.
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.
State the function of each of the following parts of the human eye:
(i) Cornea
(ii) Iris
(iii) Pupil
(iv) Retina
Millions of people of the developing countries are suffering from corneal blindness. This disease can be cured by replacing the defective cornea with the cornea of a donated eye. Your school has organised a campaign in the school and its neighbourhood in order to create awareness about this fact and motivate people to donate their eyes after death. How can you along with your classmates contribute in this noble cause? State the objectives of organising such campaigns in schools.
State the main functions of the following:
Coronary Artery
Give the main function of the following:
Retina
State the Function:
Vitreous humour
Write scientific reason.
The movie cannot be enjoyed if seat of a viewer is too close to the screen in the cinema.
Write down the names of parts of the eye in the blank spaces shown in the figure.
State the functions of the following:
Ciliary muscles
The layer in the eye where sensory cells (rods and cones) are located ______.
Which of the following is responsible for the adjustment of the size of pupil?
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.
