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प्रश्न
Name the following:
Kind of retinal cells sensitive to dim light.
उत्तर
Rod cells
संबंधित प्रश्न
Write short notes on the following: Retina
Give the scientific names of the following parts of the eye:
a clear window at the front of the eye.
Which parts of the eye cause rays of light to converge on the retina?
Which part brings the image into sharp focus on the retina? How does it do this?
A student sitting on the last bench in the class cannot read the writing on the blackboard clearly but he can read the book lying on his desk clearly. Which of the following statement is correct about the student?
(a) The near point of his eyes has receded away.
(b) The near point of his eyes has come close to him.
(c) The far point of his eyes has receded away.
(d) The far point of his eyes has come closer to him.
State whether the following statement is true or false:
Rabbit has eyes which look sideways.
The animals called predators have:
(a) both the eyes on the sides
(b) one eye on the side and one at the front
(c) one eye on the front and one at the back
(d) both the eyes at the front
With reference to the functioning of the eye, answer the question that follow:
Name the two structure in the eye responsible for bringing about the change in the shape of the lens.
What is the function of iris and the muscles connected to the lens in human eye?
Differentiate between:
Vitreous humour and Aqueous humour.
Draw a diagram of the human eye as seen in a vertical section and label the parts which suit the following descriptions relating to the:
(i) photosensitive layer of the eye.
(ii) structure which is responsible for holding the eye lens in its position.
(iii) structure which maintains the shape of the eyeball and the area of no vision.
(iv) anterior chamber seen in front of the eye lens.
(v) outermost transparent layer seen in front of the eyeball.
Name the following:
The focal length of the lens is altered by the contraction of which type of muscles.
Name the following:
The region in the eye where the rods and cones are located.
Give Technical Term:
The cells of the retina that are sensitive to colour.
State the Function:
Aqueous humour
The black opening between the aqueous humour and the lens is called ____________.
Eyes of the nocturnal birds have large cornea and a large pupil. How does this structure help them?
Where is the following located?
Yellow spot
With reference to human eye answer the question that follow:
Name the part of the eye associated with the layer providing nourishment to the eye.
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.
