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NEET Practice Questions (MCQs) with Answers & Solutions

Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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NEET 2023

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Which of the following statements are correct regarding female reproductive cycle?

A. In non-primate mammals cyclical changes during reproduction are called oestrus cycle. B. First menstrual cycle begins at puberty and is called menopause. C. Lack of menstruation may be indicative of pregnancy. D. Cyclic menstruation extends between menarche and menopause.

A. A and D only B. A and B only C. A, B and C only D. A, C and D only

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Explanation

B wrong (first cycle is menarche, NOT menopause). A, C, D are correct.

NEET 2023

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Broad palm with single palm crease is visible in a person suffering from:

A. Down's syndrome B. Turner's syndrome C. Klinefelter's syndrome D. Thalassemia

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Explanation

Simian crease (single transverse palmar crease) is a classic Down syndrome feature.

NEET 2023

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Which one of the following symbols represents mating between relatives in human pedigree analysis?

A. B. C. D.

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Explanation

A double horizontal line between the mating pair denotes a consanguineous (relative-to-relative) mating — option B.

NEET 2023

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Which one of the following common sexually transmitted diseases is completely curable when detected early and treated properly?

A. Genital herpes B. Gonorrhoea C. Hepatitis-B D. HIV Infection

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Explanation

Gonorrhoea (bacterial) is fully curable with antibiotics; the others are viral and non-curable.

NEET 2023

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Statement I: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid. Statement II: In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome.

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

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Explanation

Both statements are correct per NCERT — note that the textbook describes the unusual prokaryotic DNA charge as stated.

NEET 2023

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Statement I: RNA mutates at a faster rate. Statement II: Viruses having RNA genome and shorter life span mutate and evolve faster.

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

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Explanation

RNA lacks proof-reading; RNA viruses (e.g., influenza, HIV) evolve rapidly.

NEET 2023

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Radial symmetry is NOT found in adults of phylum _____.

A. Ctenophora B. Hemichordata C. Coelenterata D. Echinodermata

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Explanation

Hemichordates are bilaterally symmetrical as adults; the others are radial.

NEET 2023

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Which of the following are NOT considered as the part of endomembrane system?

A. Mitochondria B. Endoplasmic Reticulum C. Chloroplasts D. Golgi complex E. Peroxisomes

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

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Explanation

Endomembrane = ER, Golgi, lysosomes, vacuoles. Mitochondria, chloroplasts, peroxisomes are NOT part of it.

NEET 2023

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Match List I (Type of Joint) with List II (Found between):

List I	List II
A. Cartilaginous Joint	I. Between flat skull bones
B. Ball and Socket Joint	II. Between adjacent vertebrae in vertebral column
C. Fibrous Joint	III. Between carpal and metacarpal of thumb
D. Saddle Joint	IV. Between Humerus and Pectoral girdle

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

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Explanation

Cartilaginous → between vertebrae; Ball & socket → shoulder; Fibrous → skull; Saddle → carpal/metacarpal of thumb.

NEET 2023

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Match List I with List II with respect to human eye/hormones:

List I	List II
A. CCK	I. Kidney
B. GIP	II. Heart
C. ANF	III. Gastric gland
D. ADH	IV. Pancreas

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

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Explanation

CCK → Pancreas; GIP → Gastric gland; ANF → Heart (atrial source); ADH → Kidney.

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