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Published on: 05/03/2026
Download CBSE Class 12th Standard CBSE Biology question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Biology
Questions + Answers key
Take MCQ Biology Test
1.
Mention early symptoms of STDs ?
2.
What are the male and female gametes called?
3.
List two common means of creating awareness among people about reproduction related problem.
4.
Define semen.
5.
Give one reason for a statutory ban on amniocentesis.
6.
Name the glands associated with human male reproductive system.
7.
Mention the importance of LH surde during menstrual cucle.
8.
Which type of cell division forms spermatids from the secondary spermatocytes?
9.
The given figure depicts a diagrammatic sectional view of the human female reproductive system.Which set of three parts out of I-IVI have been correctly identified?
ii) endometrium, iii)infundibulum, iv)fimbrae
iii) infundibulum iv) fimbriae, v) cervix
iv) oviducal funnel, v) uterus, vi)cerix
i) perimetrium, ii)myometrium, iii)fallopian tube
10.
Match list I with List II and choose the correct answer
| List I | List II |
| A. Hypothalamus | 1. Sprem lysins |
| B. Acrosome | 2. Estrogen |
| C. Graafian follicle | 3. Relaxin |
| D. Leydig cells | 4. Gn RH |
| E. Parturition | 5.Testosterone |
A-4, B-1, C-2, D-3, E-5
A-2, B-1, C-4, D-3, E-5
A-2, B-1, C-5, D-4, E-3
A-4, B-1, C-2, D-5, E-3
A-5, B-1, C-3, D-2, E-4
11.
The 32 cells stage of the human embryo is
smaller than fertilized egg
same size as the fertilized egg
two times of the size of the fertilized egg
four times of the size of the fertilized egg
12.
The early stage human embryo distinctly possesses:
Gills
Gill slits
External ear (pinna)
Eyebrows
13.
Given is a diagrammatic sketch of a portion of human male reproductive system.Select the correct set of names of the parts labelled A, B, C. D:
| A | B | C | D |
| ureter | seminal vesicle | prostate | bulbourethral gland |
| A | B | C | D |
| ureter | prostate | seminal vesicle | bulbourethral gland |
| A | B | C | D |
| vas deferens | seminal vesicle | prostate | bulbo urethral gland |
| A | B | C | D |
| vas deferens | seminal vesicle | bulbourethral gland | prostate |
14.
Foetal ejection reflex in human female is induced by
differentiation of mammary glands
the pressure exerted by amniotic fluid
the release of oxytocin from pituitary
fully developed foetus and placenta
15.
Which one of the following groups includes all sexually transmitted diseases?
AIDS, syphilis, cholera
HIV, malaria, trichomoniasis
Gonorrhoea, hepatitis-B, clamydiasis
Hepatitis-B, haemophilia, AIDS.
16.
Medical Termination of Pregnancy (MTP) is considered safe up to how many weeks of pregnancy?
8 weeks
12 weeks
18 weeks
6 weeks
17.
Oral contraceptive pills helps in birth control by
killing sperms
killing ova
preventing ovulation
forming barrier between sperms and ova
1.
( )
Early symptoms of STD s includes itching, fluid discharge, slight pain and swelling in the genital region.
2.
( )
Spermatozoa and ova.
3.
( )
1. Audio-visual Media (Radio and Television)
2. Print Media (Newspapers).
4.
( )
Semen. It is the fluid ejaculated at the time of coitus containing sperms and secretion of accessory glands.
5.
( )
It is misused for sex determination and female foeticide
6.
( )
Prostate glands,bulbourethral or Cowper's glands and seminal vesicles.
7.
( )
LH surge (maximum level of luteinizing hormone) leads to ovulation,i.e. the rupture of mature Graafian follicle and the consequent release of ovum.
8.
( )
Meiosis II (similar to mitosis).
9.
(b)
iii) infundibulum iv) fimbriae, v) cervix
10.
(a)
A-4, B-1, C-2, D-3, E-5
11.
(b)
same size as the fertilized egg
12.
(b)
Gill slits
13.
(c)
| A | B | C | D |
| vas deferens | seminal vesicle | prostate | bulbo urethral gland |
14.
(d)
fully developed foetus and placenta
15.
(c)
Gonorrhoea, hepatitis-B, clamydiasis
16.
(b)
12 weeks
17.
(c)
preventing ovulation
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