NCERT Class 12 Biology Chapters
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1.
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Match List - I with List - II.
Choose the correct answer from the options given below :
(a) (A) - (III), (B) - (IV), (C) - (I), (D) - (II) (b) (A) - (IV), (B) - (III), (C) - (I), (D) - (II)
(c) (A) - (I), (B) - (III), (C) - (IV), (D) - (II) (d) (A) - (IV), (B) - (II), (C) - (III), (D) - (I)
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2.
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Match List I with List II.
Choose the correct answer from the options given below:
(a) A-IV, B-I, C-II, D-III (b) A-III, B-IV, C-I, D-II
(c) A-I, B-II, C-IV, D-III (d) A-II, B-III, C-I, D-IV
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3.
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Select the correct statement/s from the following:
A. Spermatogonia always undergo meiotic cell division.
B. Primary spermatocytes divide by mitotic cell division.
C. Secondary spermatocytes have 23 chromosomes and undergo second meiotic division
D. Spermatozoa are transformed into spermatids.
Choose the correct answer from the options given below:
(a) A and C only (b) C only (c) D only (d) B and C only
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4.
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Which of the following statements are correct about the structure of a sperm?
A. It is composed of head, thorax, neck and tail.
B. The neck region contains a lot of mitochondria.
C. The mitochondria produces energy for the movement of tail
D. The tail facilitate sperm motility essential for fertilisation
Choose the most appropriate answer from the options given below:
(a) A and B only (b) B and C only (c) C and D only (d) B and D only
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5.
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In humans, female, oogenesis is initiated __________.
(a) During embryonic development (b) At puberty
(c) After birth (d) After 18 years of age
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1.
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Draw a labelled diagram to show interrelationship of four accessory ducts in a human male reproductive system.
(CBSE 2019, 3M)
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2.
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Write the ploidy and number of chromosomes in human (a) meiocytes, and (b) gametes.
(CBSE 2020, 2M)
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3.
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Differentiate between spermiogenesis and spermiation.
(CBSE 2019, 2M)
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4.
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(a) Given below is a diagrammatic sectional view of a seminiferous tubule. State the developmental process of:
(i) ‘b’ from ‘a’
(ii) ‘e’ from ‘d’
(iii) ‘d’ from ‘b’
(b) Identify ‘a’, ‘b’ and ‘c’.
(CBSE 2023, 3M)
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5.
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The diagram given below shows the events occurring in an ovary during Oogenesis in a human female.
(a) Identity ‘X’. Mention the time when the process occurs in a human female.
(b) Identity ‘Y’. When and how is it formed?
(c) Name the hormone produced by ‘Z’.
(CBSE 2023, 3M)
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Chapter Name
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Sub Topics
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Human Reproduction
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2.1 Introduction
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2.2 Male Reproductive System
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2.3 Female Reproductive System
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2.4 Gametogenesis: Spermatogenesis and Oogenesis
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2.5 Menstrual Cycle
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2.6 Fertilization
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2.7 Embryonic Development
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2.8 Pregnancy and Childbirth
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2.9 Lactation
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