
What is Cornea? Write the function of cornea.
Important Questions on Control and Coordination in Living Organisms
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

Write one function of Sclera of the human eyeball.

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

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

Write one function of Iris of the human eyeball.


Write one function of Retina of human eyeball.


Write one function of lens of the human eyeball.

Redraw the picture given below. Identify the name indicated and label the parts
The part refracts light rays into the eye.


Answer the following questions briefly:
Explain how the human eye adapts itself to bright light and dim light.


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.

Describe the role of:
Crystalline lens

State the function of the following.
Eyelashes




State the function of the following.
Iris

State the function of the following.
Ciliary muscles

