Retina and Yellow Spot

Q. Which region of the eye has the highest concentration of cones?

1. Sclera
2. Fovea
3. Cornea
4. Conjunctiva

Q.

The light enters our eye through the transparent __________, passes through the _______ and is focused on the _______. The __________ is sensitive to light and sends images to our brain through __________.

1. cornea, retina, lens, retinal, optic nerve

2. cornea, lens, retina, retina, optic nerve

3. retina, cornea, lens, retina, optic nerve

4. retina, cornea, lens, optic never, retina

Q.

Fovea centralis is also called the yellow spot of the eye.

1. True
2. False

Q.

The layer of the eye where photoreceptors are present is called ________.

1. sclera

2. choroid

3. retina

4. cornea

Q.

The photoreceptor cells of the eye are located in the

1. Sclera

2. Iris

3. Retina

4. Optic nerve

Q.

Name the part of an eye that contains photoreceptors.

Q. Match the following parts of the eye with it's function or it's characteristic feature.

1. Carries signal to brain
2. Regulates light entry
3. Maximum photoreceptors
4. Refracts light

Q.

The layer of the eye where photoreceptors are present is called ________.

1. sclera

2. choroid

3. retina

4. cornea

Q.

In every human eye, there is a spot known as the "blind spot" where:

1. Both rods and cones are absent

2. Both rods and cones are present

3. Only rods are present

4. Only cones are present

Q.

How many types of cone cells are present in our eyes?

1. 1

2. 2

3. 3

4. 4

Q.

Match the columns.

$\begin{array}{cc}\text{Blind spot}& \text{centre of the retina}\\ \text{Yellow spot}& \text{free of rod cell and cone cell}\\ \text{Ciliary muscles}& \text{shape of the lens}\end{array}$

1. $\begin{array}{cc}\text{Blind spot}& \text{Centre of the retina}\\ \text{Yellow spot}& \text{shape of the lens}\\ \text{Ciliary muscles}& \text{free of rod cell and cone cell}\end{array}$

2. $\begin{array}{cc}\text{Blind spot}& \text{free of rod cell and cone cell}\\ \text{Yellow spot}& \text{centre of the retina}\\ \text{Ciliary muscles}& \text{shape of the lens}\end{array}$

3. $\begin{array}{cc}\text{Blind spot}& \text{centre of the retina}\\ \text{Yellow spot}& \text{shape of the lens}\\ \text{Ciliary muscles}& \text{free of rod cell and cone cell}\end{array}$

4. $\begin{array}{cc}\text{Blind spot}& \text{shape of the lens}\\ \text{Yellow spot}& \text{free of rod cell and cone cell}\\ \text{Ciliary muscles}& \text{centre of the retina}\end{array}$

Q.

Give the technical term for the photosensitive pigment present in the cone cells of the retina.

Q.

Where does the light converge inside the eye?

1. Iris

2. Retina

3. Optic Nerves

4. Pupil

Q.

Choose the correct answer from each of the four options given below:

The photoreceptor cells of the retina sensitive to color are

1. Cones

2. Rods

3. Origin of Corti

4. Rhodopsin

Q. The diagram alongside represents a section of a mammalian eye.
(i) Label the parts 1 to 5 of the diagram.
(ii) State the function of the parts labelled 4 and 5.
(iii) With the help of a diagram show the short sightedness.
Figure

Q. Sclerotic, choroid and retina are the layers of

1. Intestine
2. Eye
3. Stomach
4. Oesophagus

Q.

In the human eye, the image of an object viewed is formed on:

1. Iris

2. Pupil

3. Retina

4. Cornea

Q. The Musculus tensor choroidea is?

1. Another name of tela choroidea
2. Muscles surronding the lens
3. Levatorbulbi muscles
4. None of the above

Q.

Name the process/ term for the following statements:

The photosensitive pigments present in the rod cells of the retina.

Q. Light sensitive cells on gets activated whenever light falls on it and generate signals.

1. iris
2. thermal
3. retina
4. electrical

Q.

The number of rods present in each eye

1. 75 million

2. 125 million

3. 150 million

4. 100 million

Q.

Rod cells and cone cells are present in the:

1. Iris

2. Cornea

3. Retina

4. Pupil

Q. Where does an image form in our eye?

1. 
2. 
3. 
4. 

Q. Colour blindness results from

1. Absence of cones
2. Absence of rods
3. Absence of eyelids
4. Inverted retina

Q.

Retinal is derived from which of the following?

1. Vitamin A

2. Vitamin B

3. Vitamin K

4. Vitamin D

Q. The area of retina in human eye which contains the maximum number of cone cells is:

1. Macula
2. Yellow spot
3. Blind spot
4. Fovea centralis