Parts of the Eye

Q.

What is the middle layer of the eye ball called?

Q.

The direction of light striking the retina will be-

1. Sensory nerves $\to$ Ganglionic cells $\to$ Bipolar neurons $\to$ Photosensory cells.

2. Photosensory cells $\to$ Ganglionic cells $\to$ Bipolar neurons $\to$ Sensory nerves.

3. Photosensory cells $\to$ Bipolar neurons $\to$ Ganglionic cells $\to$ Sensory nerves.

4. Sensory nerves $\to$ Bipolar neurons $\to$ Ganglionic cells $\to$ Photosensory cells.

Q.

Adult Hyla has:

1. tympanum

2. two chambered heart

3. gills

4. caudal fin

Q.

The fovea is the point where visual activity is greatest. In Fovea:

1. only rods are densely packed

2. only cones are densely packed.

3. Both rods and cones are densely packed.

4. cones are more in number.

Q. Match the following columns and choose the correct option.
$\begin{array}{cc}ColumnI& ColumnII\\ A.Fovea& 1.Providesopeningforentryoflight\\ B.Iris& 2.TransducesRGBlight\\ C.Pupil& 3.TransmitsinformationtoCNS\\ D.Lens& 4.Controlsamountoflightentering\\ E.Opticnerve& 5.Focuseslightontheretina\end{array}$

1. A - 4 B - 1 C - 5 D - 2 E - 3
2. A - 5 B - 1 C - 4 D - 3 E - 2
3. A - 5 B - 1 C - 4 D - 5 E - 2
4. A - 1 B - 2 C - 3 D - 4 E - 5
5. A - 2 B - 4 C - 1 D - 5 E - 3

Q. Which of the following is not the part of the eye?

1. Fovea
2. Corpora quadrigemina
3. Blind spot
4. Pupil

Q. Which of the following statements is incorrect?

1. Humans focus their sight by changing the shape of their lens
2. Human eye adjusts the amount of light entering the eye by contracting the ciliary muscles
   
3. Human eye focuses by moving the lens closer to or farther from the retina
   
4. Colour blindness is due to an inherited lack of one or more types of cones
   

Q.

Macula lutea is located in

1. Middle of retina

2. Below lens

3. Below Iris

4. Below pupil