The black pigment in the eye which reduces the internal reflection is located in

(a) retina

(c) cornea

(b) iris

(d) sclerotic.

Hearing impairment affects which part of brain?

(1) Frontal lobe

(2) Parietal lobe 

(3) Temporal lobe

(4) Cerebellum

One common example of simplex reflex is 
(1) tying your shoe laces while talking to another person and not looking at them 

(2) watering of mouth at the sight of a favourite food 

(3) climbing up a stairs in dark without stumbling

(4) closing of eyes when strong light is flashed across them.

Injury to vagus nerve in humans is not likely to affect
(1) tongue movements

(2) gastrointestinal movements

(3) pancreatic secretion

(4) cardiac movements.

Which of the following nerves arises from organ of Corti?
(1) Olfactory nerve

(2) Cochlear nerve

(3) Abducens nerve

(4) None of these

If medulla oblongata is destroyed then which of the following functions wil be effected ?
(1) No thermoregulation

(2) No vision

(3) No memory

(4) No response when pricked with needle

Na⁺/K⁺ pump is associated with

1. passive transport

2. active transport

3. osmosis

4. imbibition.

Which of the following is correctly labelled?
(1) A: Reissner's membrane

(2) B:Scala vestibuli

(3) C: Basilar membrane

(4) D: Tectorial membrane

The release of chemical messenger from synaptic vesicles is under the influence of these ion(s)
(1) CI^-

(2) Fe⁺⁺ and S⁺⁺

(3) Ca⁺⁺

(4) Mg⁺⁺ and Sr⁺⁺

Which of the following is true for the function of labelled parts in the diagram below?

(1) A - Blind spot  -   Image is formed here 

(2) B - Fovea       - No visual activity is present

(3) C - Cornea      - Helps to hold lens in place

(4) D - Iris          - Visible coloured portion of eye