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Doctors Medicines MCQs Q&A

Which of the following statements is/are correct? 1. In Intracytoplasmic sperm injection method ova from the wife/donor (female) and sperms from the husband/donor (male) are collected and are induced to form zygote under simulated conditions in the laboratory. 2. In vitro fertilisation is a specialised procedure to form an embryo in the laboratory in which a sperm is directly injected into the ovum.

Which of the following statements is/are correct? 1. In Intracytoplasmic sperm injection method ova from the wife/donor (female) and sperms from the husband/donor (male) are collected and are induced to form zygote under simulated conditions in the laboratory. 2. In vitro fertilisation is a specialised procedure to form an embryo in the laboratory in which a sperm is directly injected into the ovum. Correct Answer Neither 1 nor 2

The correct answer is Neither 1 nor 2.

Key Points

In vitro fertilization​:

  • In vitro fertilization (IVF–fertilization outside the body in almost similar conditions as that in the body) followed by embryo transfer (ET) is one of such methods.
  • In this method, popularly known as the test tube baby program, ova from the wife/donor (female) and sperms from the husband/donor (male) are collected and are induced to form zygote under simulated conditions in the laboratory. Hence statement 1 is not correct.
  • The zygote or early embryos (with up to 8 blastomeres) could then be transferred into the fallopian tube (ZIFT–zygote intrafallopian transfer) and embryos with more than 8 blastomeres, into the uterus (IUT – intrauterine transfer), to complete its further development.
  • Embryos formed by in-vivo fertilization (fusion of gametes within the female) also could be used for such transfer to assist those females who cannot conceive.
  • Transfer of an ovum collected from a donor into the fallopian tube (GIFT – gamete intrafallopian transfer) of another female who cannot produce one, but can provide a suitable environment for fertilization and further development is another method attempted.

​​Intracytoplasmic sperm injection

  • Intracytoplasmic sperm injection (ICSI) is another specialized procedure to form an embryo in the laboratory in which a sperm is directly injected into the ovum. Hence statement 2 is not correct.
  • Infertility cases either due to the inability of the male partner to inseminate the female or due to very low sperm counts in the ejaculates could be corrected by artificial insemination (AI) technique.
  • In this technique, the semen collected either from the husband or a healthy donor is artificially introduced either into the vagina or into the uterus (IUI – intra-uterine insemination) of the female.

Related Questions

Which of the following statements refers to the process of 'parthenogenesis'? 1. It is a natural form of asexual reproduction in which the growth and development of embryos occur without fertilisation. 2. It is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body. 3. It is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg inside of the female's body  Select the correct answer using the codes given below.
Which of the following statements is/are true in the context of fertilisation and pollination in plants. A. Ovary of the flower matures into fruit. B. Seeds of the plant forms the ovules for fertilisation. C. Pollination takes place after fertilisation. D. In pollination, seeds are dispersed by wind, water, birds and insects. E. Fertilisation takes places in the ovules.
Which among the following is correct regarding male-female inter and intra-state migration in India as per Census-2011 data? 1. In intra-state migration, male outnumbers female in rural to urban migration 2. In inter-state migration, male outnumbers female in rural to urban migration 3. In intra-state migration, female outnumbers male in rural to rural migration 4. In inter-state migration, male outnumbers female in rural to rural migration
Each question below is followed by two statements I and II. You have to determine whether the data given in the statements are sufficient for answering the question. You should use the data and your knowledge of Mathematics to choose the best possible answer. What is the average weight of new students added? I. In a class 60% students are male and there average weight is 15 kg more than the female students, 9 males and 6 new female students joined the class and the average weight of the class increased by 0.84 II. Total male students in the class is 12 more than female students adding 9 male students to the class increases the average weight of male students by 1 kg and adding 6 female students increases the average weight of female students by 0.6.
Consider the following statements.
1. Fertilisation of the egg takes place inside the embryo sac.
2. Fertilised ovum form the embryo.
3. Endosperm is generally triploid.
Which of the statements given above are correct?
Consider the following statements regarding double fertilization and choose the correct answer:
1. At the time of the sperm's approach to the egg nucleus, the male nucleus has the appearance of a continuous thread rolled into a ball
2. It is only the presence of the two nucleoli which serves to distinguish the fertilized egg from the unfertilized egg
3. Finally, the male nucleolus increases in size and fuses with the female nucleolus thus closing the phenomenon of sexual union of the nuclei
4. The fusion of the male gamete with the secondary nucleus results in the formation of a sister embryo
Consider the following statements: 1. Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective parent. 2. A person’s genome can be edited before birth at the early embryonic stage. 3. Human induced pluripotent stem cells can be injected into the embryo of a pig. Which of the statements given above is/are correct?
Consider the following statements regarding poloyembryony and choose the correct answer:
1. False polyembryony includes the development of two or more embryo sacs within the Same nucellus, and the embryos are derived from different embryo sacs
2. In cleavage polyembryony, the zygote instead of giving rise to one embryo produces embryos by cleavage
3. According to Jeffrey (1895), in Erythronium americanum the "embryogenic mass" forms two or three embryos
What is the general nature of the specialised agencies of the UN?
1. Most of the states are the members of these specialized agencies.
2. All the specialised agencies have been brought in relationship with the UN thought special agreements.
3. Each specialised agency has a Constitution or Charter of its own which describes the duties, functions, constitution, etc. of the organisation.
Which of the statements given above is/are correct?
Which process of fusion of sperm and ova results in the formation of single structure called zygote?