Match the following columns and select the correct option :
Column I | Column II | ||
(a) | Rods and cones | (i) | Absence of Cones photoreceptor cells |
(b) | Blind Spot | (ii) | Cones are densely packed |
(c) | Fovea | (iii) | Photoreceptor cells |
(d) | Iris | (iv) | Visible coloured portion of the eye |
(a) | (b) | (c) | (d) | |
1. | (iii) | (i) | (ii) | (iv) |
2. | (ii) | (iii) | (i) | (iv) |
3. | (iii) | (iv) | (ii) | (i) |
4. | (ii) | (iv) | (iii) | (i) |
Match the following columns and select the correct option
Column I | Column II | ||
(a) | The organ of Corti | (i) | Connects the middle ear and pharynx |
(b) | Cochlea | (ii) | Coiled part of the labyrinth |
(c) | Eustachian tube | (iii) | Attached to the oval window |
(d) | Stapes | (iv) | Located on the basilar membrane |
(a) | (b) | (c) | (d) | |
1. | (iii) | (i) | (iv) | (ii) |
2. | (iv) | (ii) | (i) | (iii) |
3. | (i) | (ii) | (iv) | (iii) |
4. | (ii) | (iii) | (i) | (iv) |
Consider the two statements:
I. Electrical synapses are rare in our system.
II. Electrical synapses conduct impulse faster than the chemical synapse.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. Only I is correct
4. Both I and II are incorrect
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Match the parts of the human brain in Column I with function in Column II and select the answer from the codes given:
COLUMN I | COLUMN II | ||
A. | Medulla oblongata | a. | Coordinating center for sensory and motor signaling |
B. | Thalamus | b. | Regulation of gastric secretions |
C. | Hypothalamus | c. | Thermoregulation and osmoregulation |
D. | Hippocampus | d. | Consolidation of short term memory into long term memory |
Codes
A | B | C | D | |
1. | a | b | c | d |
2. | b | a | d | c |
3. | a | b | d | c |
4. | b | a | c | d |
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The resting axonal membrane is impermeable/nearly impermeable to:
I. Sodium ions
II. Potassium ions
III. Negatively charged proteins
1. | Only I and II | 2. | Only I and III |
3. | Only II and III | 4. | I, II and III |
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The major refractive surface in the human eye is the:
1. Anterior surface of cornea
2. Posterior surface of cornea
3. Anterior surface of lens
4. Posterior surface of lens
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Most of the neurons in the cerebral cortex are:
1. | Unipolar | 2. | Bipolar |
3. | Multipolar | 4. | Pseudounipolar |
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A gymnast is able to balance his body upside down even in total darkness because of
1. Cochlea
2. Vestibular apparatus
3. Tectorial membrane
4. Organ of corti
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Select the answer with correct matching of the structure, its location and function.
Structure |
Location |
Function |
|
1. |
Cerebellum |
Midbrain |
Controls respiration and gastric secretions |
2. |
Hypothalamus |
Forebrain |
Controls body temperature, urge for eating and drinking |
3. |
Blind spot |
Near the place where optic nerve leaves the eye |
Rods and cones are present but inactive here |
4. |
Eustachian tube |
Anterior part of internal ear |
Equalizes air pressure on either side of tympanic membrane |
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During the propagation of a nerve impulse, the action potential results from the movement of
1. Na+ ions from extracellular fluid to intracellular fluid.
2. K+ ions from extracellular fluid to intracellular fluid.
3. Na+ ions from intracellular fluid to extracellular fluid.
4. K+ ions from intracellular fluid to extracellular fluid.
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