EASY
Earn 100

What is Cornea? Write the function of cornea.

Important Questions on Control and Coordination in Living Organisms

MEDIUM

Draw a neat diagram of the vertical section of the eyeball of human eye and label the following parts:

(a) Choroid

(b) Optic nerve

(c) Iris

(d) Yellow spot

MEDIUM

Write one function of Sclera of the human eyeball.

MEDIUM

Write one function of the vitreous humor of the human eyeball.

MEDIUM

Draw a neat diagram of the vertical section of the eyeball of human eye and label the following parts:

(a) Choroid (b) Optic nerve (c) Iris (d) Yellow spot

MEDIUM

Write one function of Iris of the human eyeball.

EASY
Choroid helped in the accommodation of eye by changing the curvature and shape of the lens.
MEDIUM

Write one function of Retina of human eyeball.

EASY
Curvature of lens increases when viewing near objects.
MEDIUM

Write one function of lens of the human eyeball.

EASY

Redraw the picture given below. Identify the name indicated and label the parts

Question Image

The part refracts light rays into the eye.

EASY
Vitreous humor is formed from blood, and is reabsorbed by blood.
EASY

Answer the following questions briefly:

 Explain how the human eye adapts itself to bright light and dim light.

MEDIUM
Question Image
The diagram above shows the front view of the human eye in different conditions of dim and bright light. Write the function of the part labelled.
EASY

State the function of the following.

Eyelashes

EASY

State the function of the following.

Iris

EASY

State the function of the following.

Ciliary muscles