Question

Read the sources given and answer any four from the questions given below:

The couples can be assisted to have children by certain special techniques called assisted reproductive technologies (ART). ART includes a number of technologies. In vitro fertilisation (IVF) or test tube babies is a technique in which the ovum is fertilised using a donor sperm outside the body and the fertilised ovum is implanted in the uterus of female for further development. Test tube babies, as the name suggests are not reared in test tubes. Test tube fertilisation is a delicate surgery where the ova from a female are removed under aseptic conditions and fertilised externally with the sperm in the laboratory. The zygote or early embryos with up to 8 blastomeres are transferred into the fallopian tube called zygote intra fallopian transfer (ZIFT) or the embryos with more than 8 blastomeres are transferred into uterus called intrauterine transfer (IUT). Intra uterine insemination (IUI), is another technique in which the semen collected from the husband or donor is artificially introduced into either the vagina or uterus of the female. Gamete intra fallopian transfer (GIFT) is another method in which an ovum is collected from a female donor and transferred to fallopian tube of another female who cannot produce ovum but can provide environment for fertilisation and further development of the foetus.

1. IUI is a technique in which
   1. fertilisation occurs in a test tube
   2. fertilisation occurs in the fallopian tubes
   3. blastomere stage is implanted in the uterus
   4. zygote is transferred to fallopian tubes
2. 'In vitro' fertilisation means
   1. development of foetus occurs in a lab
   2. fertilisation occurs in fallopian tubes in female
   3. intrauterine insemination method is used
   4. ovum is fertilised outside the body
3. Test tube babies is a technique in which
   1. development of foetus occurs in a test tube
   2. embryo is formed in the fallopian tube
   3. embryo up to 8 blastomere stage is formed in a test tub
   4. foetus is formed in a test tube
4. Which of the following statements is true for GIFT?
   1. ovum from donor female is transferred to another female
   2. fertilisation is done in test tube
   3. embryo is implanted in uterus
   4. zygote is transferred to uterus
5. ZIFT is a kind of ART in which
   1. zygote is transferred to the uterus
   2. zygote is transferred to the fallopian tube
   3. zygote is implanted in the uterus
   4. zygote is formed in the fallopian tube

Answer 1

1. Fertilisation occurs in the fallopian tubes
2. Ovum is fertilised outside the body
3. Embryo up to 8 blastomere stage is formed in a test tube
4. Ovum from donor female is transferred to another female
5. Zygote is transferred to the fallopian tube