CBSE Class 12 Biology Previous Year Question Paper 2021-22

Question Papers Class 12 PDF

This document presents the CBSE Class 12 Biology Previous Year Question Paper for the 2021-22 session, focusing on topics like Reproductive Health, Population Stabilisation, Birth Control, Medical Termination of Pregnancy (MTP), Sexually Transmitted Infections (STIs), and Infertility. It includes various question formats such as Multiple Choice Questions (MCQs), Assertion-Reason questions, Very Short Answer (VSA), Short Answer (SAI and SAII), and Long Answer (LA) questions, with marks indicated for some sections. The paper features specific questions on amniocentesis, reproductive and child health care programmes, contraceptive methods (IUDs, oral pills, surgical methods), assisted reproductive technologies (ART) like GIFT, ICSI, ZIFT, and IUI, and STIs. Solving this board question paper is crucial for students to understand the exam pattern, question types, and marking scheme, thereby enhancing their preparation and performance in the final CBSE board examinations.

Quick info

BoardCBSE
Class12
SubjectBiology
Session2021-22
LanguageEnglish
TypePrevious Year Question Paper
Exam typeBoard Exam

Paper pattern

The paper includes MCQs, Assertion-Reason, VSA (1 mark), SAI (2 marks), SAII (3 marks), and LA (5 marks) questions, covering various aspects of reproductive biology and health.

Topics covered

Paper topics

  • Reproductive Health
  • Problems and Strategies
  • Population Stabilisation
  • Birth Control
  • Medical Termination of Pregnancy (MTP)
  • Sexually Transmitted Infections (STIs)
  • Infertility
  • Assisted Reproductive Technologies (ART)

Important topics

  • Amniocentesis
  • Contraceptive Methods
  • Surgical Contraception
  • IUDs
  • Oral Contraceptive Pills
  • Assisted Reproductive Technologies (ART)
  • Sexually Transmitted Infections (STIs)

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Question paper text

Reproductive Health

Previous Years' CBSE Board Questions

3.1 Reproductive Health-Problems and Strategies

MCQ

Assertion (A): Determining the sex of an unborn child followed by MTP is an illegal practice. Reason (R): Amniocentesis is a practice to test the presence of genetic disorders also.

  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) true, but (R) is not the correct explanation of (A).
  3. (A) is true, but (R) is false.
  4. (A) is false, but (R) is true. (2023)

2 Assertion (A): Reproductive and Child Health Care (RCH) programme was initiated in India in 1951 to attain total reproductive health as a social goal. Reason (R): Audio-visual and print media awareness was created among reproduction related aspects under the programme.

  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true and (R) is not the correct explanation of (A).
  1. Point S
  2. Point Q (2023) An
  1. (A) is true but (R) is false.
  2. (A) is false but (R) is true. (Term I, 2021-22) R
  3. Assertion (A): Statutory ban on amniocentesis for sex-determination is to legally check increasing female feticide. Reason (R): In amniocentesis, some of the amniotic fluid that has the developing fetus is taken to analyse the chromosomes in the fetal cells.
  4. Both (A) and (R) are true and (R) is the correct explanation of (A).
  5. Both (A) and (R) are true and (R) is not the correct explanation of (A).
  6. (A) is true but (R) is false.
  7. (A) is false but (R) is true. (2021 C)

SAI (2 marks)

What is amniocentesis? How is it misused? (AI 2014C)

SAII (3 marks)

  1. (a) Mention the problems that are taken care of by Reproduction and Child Health Care Programme.
  2. What is aminocentesis and why there is a statutory ban on it?

(Al 2016, 2014, Foreign 2015)

If implementation of better techniques and new

strategies are required to provide more efficient

care and assistance to people, then why is there a

statutory ban on amniocentesis? Write the use of

this technique and give reason to justify the ban.

(Foreign 2015, AI 2014)

3.2 Population Stabilisation and Birth Control

MCO

  1. A human male decides to adopt a surgical method for contraception. Identify the point in the diagram where a cut would be made and tied.
  2. Point R
  3. Point P
  4. Assertion (A): Tubectomy is a sterilisation procedure advised for females as a terminal method. Reason (R): In tubectomy, a small part of the fallopian tube is removed or tied up blocking gamete transport thereby preventing conception.
  5. Both (A) and (R) are true and (R) is the correct explanation of (A).
  6. Both (A) and (R) are true and (R) is not the correct explanation of (A).
  7. (A) is true but (R) is false.
  8. (A) is false but (R) is true. (Term I, 2021-22) 1

An IUD that is recommended to suppress sperm

motility and the fertilising capacity of sperm is (c)

  1. Lippe's loop (b) LNG-20

(Term I, 2021-22) An

VSA (1 mark)

Name an IUD that you would recommend to promote

the cervix hostility to the sperms.

(Delhi 2014C)

State one reason why breast-feeding the baby acts

as a natural contraceptive for the mother.

(AI 2014C)

SAI (2 marks)

Why are copper containing intrauterine devices considered an ideal contraceptive for human females? (Delhi 2014C)

  1. What do oral pills contain and how do they act as effective contraceptives? (AI 2014C)

Listed below are all venereal diseases except (c)

  1. Genital warts (b) Ascariasis

SA II (3 marks)

  1. Name and explain a surgical contraceptive method that can be adopted by the male partner of a couple. (2023)
  2. (a) Explain the mode of action of Cu<sup>++</sup> releasing IUDs as a good contraceptive. How is hormone releasing IUD different from it?
  3. Why is 'Saheli' a preferred contraceptive by women (any two reasons)? (2020) R
  4. (a) List any four characteristics of an ideal contraceptive.
  5. Name two intrauterine contraceptive devices that affect the motility of sperms. (Al 2016)

Column A Column B

S.No. Names S.No. Procedures

of ART

  1. GIFT (i) Transfer of ovum from a donor into the fallopian tube of another female.
  2. ICSI (ii) Transfer of semen from the donor into the vagina of the female.
  3. ZIFT (iii) Injecting sperms directly into the ovum
  4. IUI (iv) Transfer of early embryos into the fallopian tube.
  1. Name two hormones that are constituents of contraceptive pills. Why do they have high and effective contraceptive value? Name a commonly prescribed non-steroidal oral pill. (Al 2016)
  2. Name any two copper releasing IUDs.
  3. Explain how do they act as effective contraceptives in human female. (Al 2014)

A woman has certain queries as listed below, before starting with contraceptive pills. Answer them:

  1. What do contraceptive pills contain and how do they act as contraceptives?
  2. What schedule should be followed for taking these pills? (AI 2014)

Name and explain the surgical method advised to human males and females as a means of birth control. Mention its one advantage and one disadvantage. (Foreign 2014)

LA (5 marks)

  1. (a) IUDs are said to be effective contraceptives. Name any two commonly used IUDs and write their mode of actions.
  2. When is sterilisation advised to married couples? How is it carried out in a human male and a female, respectively? (2020) R

3.3 Medical Termination of Pregnancy (MTP)

VSA (1 mark)

  1. Our government has intentionally imposed strict conditions for MTP in our country. Justify giving a reason. (NCERT Exemplar, Delhi 2017)

3.4 Sexually Transmitted Infections (STIs)

MCQ

3.5 Infertility

MCQ

Given below are column A with a list of certain

Assisted Reproductive Technologies (ART) and in

Column B the procedures followed during ART:

Choose the option where ART correctly matches

with the procedure.

  1. (A)-(i), (B)-(ii), (C)-(iii), (D)-(iv)
  2. (A)-(iv), (B)-(i), (C)-(ii), (D)-(iii)
  3. (A)-(iv), (B)-(iii), (C)-(i), (D)-(ii)
  4. (A)-(i), (B)-(iii), (C)-(iv), (D)-(ii) (2023) R
  5. The so-called test tube babies are produced by the technique of "in vitro fertilisation". It is a form of assisted reproductive technologies (ART). The steps of ART include:

Administration of gonadotropins or Clomiphene

Citrate to the woman.

Aspiration of several ova (secondary oocytes)

by laparoscopy.

  1. Collection of the sperm from the husband/ donor semen.
  2. Fertilisation and early development of the embryo in the culture plate.
  3. Incubation of ovum and the sperm together in special media and environment.
  4. Implantation of the 8-celled embryos (or more) in the uterine cavity.

Answer the given questions on the basis of

understanding of the above given case.

Frequently asked questions

What is this document?

This is a Previous Year Question Paper (PYQ) for CBSE Class 12 Biology, specifically from the 2021-22 session.

What topics are covered in this Biology paper?

The paper covers key topics including Reproductive Health, Population Stabilisation, Birth Control, Medical Termination of Pregnancy (MTP), Sexually Transmitted Infections (STIs), and Infertility.

What types of questions are included?

The paper features a mix of question types, such as MCQs, Assertion-Reason, Very Short Answer, Short Answer, and Long Answer questions.

How does solving this previous year paper help?

Solving this previous year question paper helps students understand the CBSE exam pattern, question difficulty, and marking scheme, improving their preparation and confidence for the board exams.

Is this paper useful for the 2021-22 CBSE Biology exam?

Yes, this is an official CBSE Board Question Paper from the 2021-22 session, making it highly relevant for students preparing for their Biology examinations.

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