Question

QUESTION 19

What types of receptors does the eye use?

a. Photoreceptors

b. Nociceptors

c. chemoreceptors

d. Mechanoreceptors

QUESTION 20

of the eye admits the light rays.

a. Sclera

b. cornea.

c. pupil

d. vitreous body

Answer 1

Answer [Q-19]: a. Photoreceptors

Explanation: There are mainly 5 types of sensory receptors in our body. Out of this, photoreceptors are called the visual receptors.

- There are two types of photoreceptors that are rods and cones.

• Rods detect the amount of light and are mainly responsible for monochromatic vision.
• Cones see the color (red, green and blue) and are responsible for color vision.

Incorrect answers:

b.) Nociceptors: They the sensory receptors that are sensitive towards tissue damage or damage to the body parts.

c.) Chemoreceptors: They are sensitive to chemical stimuli such as smell, taste.

d.) Mechanoreceptors: These receptors respond to mechanical shocks or forces due to stress or pain.

Answer [Q-20]: b. Cornea

Explanation: Human eyes consist of various parts like Cornea, Sclera, Iris, Lens, Vitreous body, Retina.

- Out of this Cornea is located in the anterior part of the eye. Its main function is to admit light into eye.

Incorrect answers:

a.) Sclera: It is the white opaque layer and the outermost part of the eye. It helps in the protection of the inner sensitive parts of eyes and also gives the eye its shape.

c.) Pupil: It is round hole located in the center most part of the eye. It contraction and dilation adjusts amount of light that enters the eyes.

d.) Vitreous body: It is gel like fluid present between lens and retina. It gives the eye its shape as well as well as helps to maintain the shape.