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NEET Practice Questions (MCQs) with Answers & Solutions

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NEET 2024

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Given below are two statements:

Statement I: The cerebral hemispheres are connected by nerve tract known as corpus callosum.

Statement II: The brain stem consists of the medulla oblongata, pons and cerebrum.

In the light of the above statements, choose the most appropriate answer from the options given below:

A. Statement I is incorrect but Statement II is correct. B. Both Statement I and Statement II are correct. C. Both Statement I and Statement II are incorrect. D. Statement I is correct but Statement II is incorrect.

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Explanation

Brain stem = medulla + pons + midbrain (not cerebrum). Statement II is incorrect.

NEET 2024

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Given below are two statements:

Statement I: Gause's competitive exclusion principle states that two closely related species competing for different resources cannot exist indefinitely.

Statement II: According to Gause's principle, during competition the inferior will be eliminated. This may be true if resources are limiting.

In the light of the above statements, choose the correct answer from the options given below:

A. Statement I is false but Statement II is true. B. Both Statement I and Statement II are true. C. Both Statement I and Statement II are false. D. Statement I is true but Statement II is false.

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Explanation

Both reflect Gause's competitive exclusion concept as stated in NCERT.

NEET 2024

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Identify the correct option (A), (B), (C), (D) with respect to spermatogenesis. (Flow: GnRH → LH (left arm) → (B) → Androgens; GnRH → (A) (right arm) → (C) → Factors → (D) = Formation of spermatids.)

A. ICSH, Leydig cells, Sertoli cells, spermatogenesis. B. FSH, Leydig cells, Sertoli cells, spermiogenesis. C. ICSH, Interstitial cells, Leydig cells, spermatogenesis. D. FSH, Sertoli cells, Leydig cells, spermatogenesis.

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Explanation

GnRH triggers LH and FSH (A). LH acts on Leydig (interstitial) cells (B) → androgens. FSH acts on Sertoli cells (C) → factors → spermiogenesis (D).

NEET 2024

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The following are the statements about non-chordates:

A. Pharynx is perforated by gill slits. B. Notochord is absent. C. Central nervous system is dorsal. D. Heart is dorsal if present. E. Post anal tail is absent.

Choose the most appropriate answer from the options given below:

A. B, C & D only B. A & C only C. A, B & D only D. B, D & E only

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Explanation

Non-chordates lack gill slits (A wrong) and have a ventral CNS (C wrong). B, D and E are correct.

NEET 2024

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Match List I with List II:

List I	List II
A. Unicellular glandular epithelium	I. Salivary glands
B. Compound epithelium	II. Pancreas
C. Multicellular glandular epithelium	III. Goblet cells of alimentary canal
D. Endocrine glandular epithelium	IV. Moist surface of buccal cavity

Choose the correct answer from the options given below:

A. A-II, B-I, C-IV, D-III B. A-II, B-I, C-III, D-IV C. A-IV, B-III, C-II, D-I D. A-III, B-IV, C-I, D-II

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Explanation

Goblet cells (unicellular gland), buccal cavity (compound epithelium), salivary glands (multicellular exocrine), pancreas (endocrine).

NEET 2024

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Match List I with List II:

List I	List II
A. P wave	I. Heart muscles are electrically silent.
B. QRS complex	II. Depolarisation of ventricles.
C. T wave	III. Depolarisation of atria.
D. T-P gap	IV. Repolarisation of ventricles.

Choose the correct answer from the options given below:

A. A-IV, B-II, C-I, D-III B. A-I, B-III, C-IV, D-II C. A-III, B-II, C-IV, D-I D. A-III, B-II, C-IV, D-I

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Explanation

P — atrial depolarisation; QRS — ventricular depolarisation; T — ventricular repolarisation; T-P gap — electrically silent diastole.

NEET 2024

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Match List I with List II:

List I	List II
A. Exophthalmic goiter	I. Excess secretion of cortisol, moon face & hyperglycemia
B. Acromegaly	II. Hypo-secretion of thyroid hormone and stunted growth
C. Cushing's syndrome	III. Hyper secretion of thyroid hormone & protruding eye balls
D. Cretinism	IV. Excessive secretion of growth hormone

Choose the correct answer from the options given below:

A. A-III, B-IV, C-I, D-II B. A-I, B-III, C-IV, D-II C. A-IV, B-II, C-III, D-I D. A-III, B-IV, C-II, D-I

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Explanation

Exophthalmic goiter — hyperthyroidism (Graves); Acromegaly — GH excess in adults; Cushing's — cortisol excess; Cretinism — congenital hypothyroidism.

NEET 2024

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Match List I with List II:

List I	List II
A. Mesozoic Era	I. Lower invertebrates
B. Proterozoic Era	II. Fish & Amphibia
C. Cenozoic Era	III. Birds & Reptiles
D. Paleozoic Era	IV. Mammals

Choose the correct answer from the options given below:

A. A-III, B-I, C-IV, D-II B. A-II, B-I, C-III, D-IV C. A-III, B-I, C-II, D-IV D. A-I, B-II, C-IV, D-III

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Explanation

Mesozoic — birds & reptiles; Proterozoic — lower invertebrates; Cenozoic — mammals; Paleozoic — fish & amphibia.

NEET 2024

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Match List I with List II related to digestive system of cockroach:

List I	List II
A. The structures used for storing of food.	I. Gizzard
B. Ring of 6-8 blind tubules at junction of foregut and midgut.	II. Gastric Caeca
C. Ring of 100-150 yellow coloured thin filaments at junction of midgut and hindgut.	III. Malpighian tubules
D. The structures used for grinding the food.	IV. Crop

Choose the correct answer from the options given below:

A. A-III, B-II, C-IV, D-I B. A-IV, B-II, C-III, D-I C. A-I, B-II, C-III, D-IV D. A-IV, B-III, C-II, D-I

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Explanation

Crop — food storage; gastric caeca — foregut/midgut junction; Malpighian tubules — midgut/hindgut junction; gizzard — grinding food.

NEET 2024

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Given below are two statements:

Statement I: Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced.

Statement II: Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes.

In the light of the above statements, choose the most appropriate answer from the options given below:

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Explanation

Both statements are reproduced from NCERT class XII (immunology chapter).

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