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प्रश्न
Choose the correct answer.
Aperture controlling passage to light into the eye is ___________
विकल्प
blind spot
pupil
iris
cornea
उत्तर
Aperture controlling passage to light into the eye is iris
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संबंधित प्रश्न
The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to ______.
The region of the vertebrate eye, where the optic nerve passes out of the retina, is called the
(a) fovea
(b) iris
(c) blind spot
(d) optic chaisma
With the help of ciliary muscles the human eye can change its curvature and thus alter the focal length of its lens. State the changes that occur in the curvature and focal length of the eye lens while viewing (a) a distance object, (b) nearby objects.
What is the function of the lens in the human eye?
What is the least distance of distinct vision for a normal human eye?
The human eye forms the image of an object at its ______.
How much is our field of view:
with both eyes open?
Name two animals having eyes:
at the front of the head.
With both eyes open, a person's field of view is about:
(a) 90°
(b) 150°
(c) 180°
(d) 360°
With reference to the functioning of the eye, answer the question that follow:
What is the shape of the lens during distant vision?
We see advertisements for eye donation on television or in newspapers. Write the importance of such advertisements.
Name the following:
The opening through which light enters the eyes.
Explain the Term: Accommodation in the eye
Choose the Odd One Out:
Choose the Odd One Out:
Complete the following sentence with appropriate Word
The aperture in the eye through which light enters is the:
The following figure show the change in the shape of the lens while seeing distant and nearby objects. Complete the figures by correctly labelling the diagram.
Write the main functional activity of the following structure.
Ciliary body and suspensory ligament
Name the following:
Two pigments of the sensory cells.
The figure given below refers to the vertical section of the eye of a mammal. Study the figure carefully and answer the following questions.
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- Label the guidelines shown as 1 to 10.
- Write one important role of parts shown as 3 and 7.
- Write one structural difference between the parts shown as 9 and 10.
- Mention one functional difference between the parts shown as 6 and 8.
