Single Choice

Aperture of an eye can be changed by

AAquous humor
BVitreous humor
CCiliary muscles
DIris
Correct Answer

Solution

The term aperture represents a hole through which light enters the eye. It is known as pupil. Its size can be changed by iris. Iris is a thin circular structure in the eye. It controls the diameter and size of the pupil (aperture of the eye) and thus regulates the amount of light entering the pupil and reaching the retina.
So, the correct answer is 'Iris'.

SIMILAR QUESTIONS

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

Photosensitive compound in human eye is made up of

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

Choose the correct statement.

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

Which of the following statements is correct?

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

In mammalian eye, the 'fovea' is the center of the visual field where

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

Match the terms in column I with those in column II. Column I Column II (a) Compound epithelium (i) Alimentary canal (b) Compound eye (ii) Cockroach (c) Septal nephridia (iii) Skin (d) Open circulatory system (iv) Mosaic vision (e) Typhlosole (v) Earthworm (f) Osteocytes (vi) Phallomere (g) Genitalia (vii) Bone

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

Briefly describe the structure of eye.

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

How does the eye regulate the amount of light that falls on the retina?

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

The region of the vertebrate eye, where the optic nerve passes out of the retina, is called as (a) Fovea (b) Iris (c) Blind spot (d) Optic chaisma

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

Rhodopsin is found in

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

Pigmented layer in eye is called as

Contact Details