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Published on: 28/05/2021
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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 Test1.
Under which circumstances, the emergency contraceptives are proved to be effective?
2.
What is the method of directly injecting a sperm into ovum called as ?
3.
Give the difference between In – vivo and In –vitro fertilization
4.
What do you mean by ectopic pregnancy? Why does it happen?
5.
What is the significance of progesterone – estrogen combination as contraceptive measure?
6.
A disease reported to be high among individual of age group of 15-24years. Name the disease and mention three preventative measures of these diseases
7.
Name the device which can prevent contraception in the following ways.
i) By increasing phagoytosis of sperm within the uterus.
ii) By suppressing sperm motility and thereby the fertilizing ability
iii) By making uterus unsuitable for implantation.
8.
It is a sterilization procedure in female where a small part of a fallopian tube is removed or tied up through a small incision in the abdomen or through vagina. Name the surgical method?
9.
Gonorrhoea, Syphilis, Genital Herpes, Chalmydiasis, Genital Warts, Trichomoniasis, Hepatitis –B etc are collectively called STDS? Write the full forms of STDs?
10.
Surgical methods are generally advised for the male / female partner as an ultimate method to prevent any more pregnancies. Name the procedure in case of male and female?
11.
It is methods based on the fact that ovulation and therefore the cycle do not occur during the period of intense lactation following parturition. Name the method?
12.
In India often the females is blamed for the couple being child less but more often that the problem lies in the male partner. The same couple could be guided to have children though certain special techniques. Name the techniques?
13.
It is a specialized procedure to form a zygote under laboratory conditions, in which sperm is directly injected into the ovum. Name the procedure?
14.
In vitro fertilization refers to the fusion gametes outside the reproductive canal almost in similar condition as that exist in the body. Mention the popular name?
15.
It is a method involving the transfer of a ovum collected from a donor female into reproductive canal of another female, who cannot produce ova but can provide suitable condition for fertilization and further growth from embryo stage up to parturition. Name the method?
16.
"Creating awareness among people about various reproductions related aspect and providing facilities and support for building up a reproductively healthy society are the major tasks of a good government. For this various programmes are undertaken". Name the programs?
17.
How do hormonal pills work as contraceptives?
18.
State one reason why breast-feeding the baby acts as a natural contraceptive for the mother.
1.
( )
Emergency contraceptives, e.g. i-pill, pill 72 are taken to avoid possible pregnancy due to rape or casual unprotected intercourse.
2.
( )
Intra Cytoplasmic Sperm Injection (ICSI).
3.
( )
In-Vivo (in side mother's body), in-vitro (Inside the laboratory)
4.
( )
Implantation outside uterus, Due to STDs
5.
( )
Easily available , create gap, inhibit ovulation and implantation, less side effect
6.
( )
Sexually Transmitted Disease.
Three preventive measures are
i) Avoid sex with unknown partners/multiple partners
ii) Always use condoms during coitus.
In case of doubt/go to a qualified doctor for diagnosis and get complete treatment.
7.
( )
IUDS – (intra uterine devices)
8.
( )
Tubectomy
9.
( )
STD (sexually transmitted disease)
10.
( )
Sterilization. Male – Vasectomy, Female - Tubectomy
11.
( )
Lactation amenorrhea (absence of menstruation)
12.
( )
ART (Assisted reproductive technology.)
13.
( )
ICSI (intra cytoplasmic sperm injection)
14.
( )
Test tube baby programme.
15.
( )
GIFT (gamete intra fallopian transfer )
16.
( )
Reproductive and child health care (RCH) programmes.
17.
( )
An oral pill prevents pregnancy in the following ways
(i) It inhibits ovulation and implantation.
(ii) It alters the quality of cervical mucus and retards the entry of sperms into cervix.
18.
( )
Lactation or breast-feeding the baby delays the onset or return of menstruation and ovulation cycle, due to interference of hormones. Therefore, the chances of conception are nilduring this period, i.e. upto six months. Hence, breast-feeding baby may act as a natural contraceptive for mother.
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