The part of the inner ear which is responsible for hearing is :

1. Semicircular canal
2. Utriculus
3. Cochlea
4. Sacculus

The spiral organ possessing sensory cells for hearing is:

1. Ampulla
2. Semicircular Canal
3. Vestibule
4. Organ of Corti

Garima feels difficulty in seeing in dim light and during nights. Which of the following could not be the cause of her condition ?

1. Deficiency of vitamin A.
2. Non-formation of the pigment visual purple.
3. Excessive synthesis of pigment iodopsin.
4. Rods do not synthesize the pigment rhodopsin.

When a person comes out of a cinema hall after a noon show, he experiences a dazzling effect for a short period of time. It happens due to degeneration of (P) …………… and regeneration of (Q) …………… pigments. Which of the following options is correct for P and Q ?

1. P - Iodopsin, Q - Rhodopsin

2. P - Rhodopsin, Q - Iodopsin

3. P - Visual violet, Q - Visual purple

4. P - Iodopsin, Q - Visual violet