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Question
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.
Solution
The part of the eye which can be donated from a clinically dead person is the Cornea.
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RELATED QUESTIONS
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
Draw a neat and labelled diagram of the structure of the human eye.
Fill in the following blank with suitable word:
The iris controls the amount of................entering the eye.
The human eye possesses the power of accommodation. This is the power to:
(a) alter the diameter of the pupil as the intensity of light changes
(b) distinguish between lights of different colours
(c) focus on objects at different distances
(d) decide which of the two objects is closer.
Out of animals of prey and predators, which have their eyes:
on the opposite sides of their head?
The region in the eyes where the rods and cones are located is the
Name the following:
The part of the eye responsible for its shape.
Mention if the following statement is true (T) or false (F) Give reason.
Short-sightedness and hyperopia are one and the same thing
Given below is certain structure. Write against them its functional acivity.
retina and ……………………….
Define the following:
Yellow spot
The diagram alongside represents a certain defect of vision of the human eye.
(i) Name the defect.
(ii) Describe briefly the condition in the eye responsible for the defect.
(iii) Redraw the figure by adding a suitable lens correcting the defect. Label the parts through which light-rays pass.
(iv) What special advantage do human beings derive in having both eyes facing forward?
State the Function:
Ear drum
In a relaxed state, the focal length of healthy eyes is _______.
Vision defect that increases distance between the lens of the eye and retina of the eye is termed as myopia.
Which one of the following statements is NOT correct?
Given below is a cross section of the human eye. Match the structures marked (a) to (e) with their correct functions:
Example: (f) - 6. Holds the lens in position
| Cross section of Human Eye | Functions | |
 |
1. | Protects retina |
| 2. | Regulates the size of the pupil | |
| 3. | Alters the shape of the lens | |
| 4. | Keeps the lens moist | |
| 5. | Transmits nerve impulses to brain | |
| 6. | Holds the lens in position |
Name the following:
Kind of retinal cells sensitive to dim light.
Which of the following is responsible for the adjustment of the size of pupil?
Give reason:
Blind spot is considered as 'area of no vision'.
