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NEET Zoology PYQs
Class XI & Class XII
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🧬 Zoology
📘 Class XI & XII
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407 questions in Zoology
Presence of which of the following conditions in
urine are indicative of Diabetes Mellitus?
A
Uremia and Ketonuria
B
Uremia and Renal Calculi
C
Ketonuria and Glycosuria
D
Renal calculi and Hyperglycaemia
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Which of the following would help in prevention of
diuresis?
A
More water reabsorption due to undersecretion of ADH
B
Reabsorption of Na+ and water from renal
tubules due to aldosterone
C
Atrial natriuretic factor causes
vasoconstriction
D
Decrease in secretion of renin by JG cells
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Select the incorrectly matched pair from following:
A
Chondrocytes - Smooth muscle cells
B
Neurons - Nerve cells
C
Fibroblast - Areolar tissue
D
Osteocytes - Bone cells
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Match the following columns and select the correct option:
Column-I
Column-II
(A)Gout
(I)Decreased levels of estrogen
(B)Osteoporosis
(II)Low Ca++ ions in the blood
(C)Tetany
(III)Accumulation of uric acid crystals
(D)Muscular dystrophy
(IV)Auto immune disorder
(V)Genetic disorder
A
(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
B
(A)-(III), (B)-(I), (C)-(II), (D)-(V)
C
(A)-(IV), (B)-(V), (C)-(I), (D)-(II)
D
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
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Match the following columns and select the
correct option.
Column-I
Column-II
(A)Floating Ribs
(I)Located between second and seventh ribs
(B)Acromion
(II)Head of the Humerus
(C)Scapula
(III)Clavicle
(D)Glenoid cavity
(IV)Do not connect with the sternum
A
(A)-(II), (B)-(IV), (C)-(I), (D)-(iii)
B
(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
C
(A)-(III), (B)-(II), (C)-(IV), (D)-(I)
D
(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
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Which of the following is associated with decrease in cardiac output?
A
Sympathetic nerves
B
Parasympathetic neural signals
C
Pneumotaxic centre
D
Adrenal medullary hormones
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Explanation: Decrease in cardiac output occurs mainly when parasympathetic neural signals to the heart prevail. The vagus nerve slows the heart rate (and reduces contraction strength), lowering cardiac output. In NCERT, the parasympathetic system reduces heart rate and thus CO. Sympathetic nerves increase heart rate and force of contraction, raising CO. Adrenal medullary hormones (adrenaline) also increase heart rate and strength, again increasing CO. The pneumotaxic centre primarily regulates breathing patterns, not directly cardiac output, so it does not cause a decrease in CO by itself. Therefore, option 2 is correct.
🧠Did You Know? Parasympathetic effects on the heart are mediated by muscarinic receptors that slow heart rate.
💡 NCERT Memory Line: Parasympathetic (vagal) activity decreases heart rate and cardiac output; sympathetic activity increases them.
Match the following columns and select the correct option:
Column-I
Column-II
(A)Rods and Cones
(I)Absence of 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
(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
B
(A)-(II), (B)-(III), (C)-(I), (D)-(IV)
C
(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
D
(A)-(II), (B)-(IV), (C)-(III), (D)-(I)
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Match the following columns and select the
correct option.
Column-I
Column-II
(A)Organ of Corti
(I)Connects 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
(A)-(II), (B)-(III), (C)-(I), (D)-(IV)
B
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
C
(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
D
(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
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Snow-blindness in Antarctic region is due to:
A
Freezing of fluids in the eye by low temperature
B
Inflammation of cornea due to high dose of UV-B radiation
C
High reflection of light from snow
D
Damage to retina caused by infra-red rays
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Match the following columns and select the correct option:
Column-I
Column-II
(A)Pituitary hormone
(I)Steroid
(B)Epinephrine
(II)Neuropeptides
(C)Endorphins
(III)Peptides, proteins
(D)Cortisol
(IV)Biogenic amines
A
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
B
(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
C
(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
D
(A)-(iii), (B)-(IV), (C)-(I), (D)-(II)
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