MCQOPTIONS
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MCQOPTIONS
This section includes 26 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
DNA is microinfected into the fertilized egg |
| A. | after the fusion of male and female nuclei |
| B. | before the fusion of male and female nuclei |
| C. | at the time of fusion of male and female nuclei |
| D. | any time, it can be infected |
| Answer» C. at the time of fusion of male and female nuclei | |
| 2. |
Karyoplast is |
| A. | cells devoid of cell wall |
| B. | nuclei |
| C. | nuclei with only some residual plasma membrane |
| D. | cell with nucleus |
| Answer» D. cell with nucleus | |
| 3. |
When the cells are enucleated and centrifuged, nuclei |
| A. | detach from cell and settle at the bottom |
| B. | detach from cell and remain in the supernatant |
| C. | nuclei remain attached to the cell |
| D. | none of the above |
| Answer» B. detach from cell and remain in the supernatant | |
| 4. |
Enucleation of the cells can be achieved by treating the cells with |
| A. | polyethylene glycol |
| B. | cytochalasin B |
| C. | both (a) and (b) |
| D. | alcohol |
| Answer» C. both (a) and (b) | |
| 5. |
In which year, Dolly the first mammalian clone was born? |
| A. | 1995 |
| B. | 1997 |
| C. | 1996 |
| D. | 1998 |
| Answer» D. 1998 | |
| 6. |
The number of follicles at any particular stage is governed by |
| A. | the rate of entry of dormant follicles |
| B. | the rate of growth of follicles |
| C. | the rate of loss of follicles |
| D. | all of the above |
| Answer» E. | |
| 7. |
Superovulation is an |
| A. | increased ovulatory response by external hormonal therapy |
| B. | decreased ovulatory response by external hormonal therapy |
| C. | decreased ovulatory response by internal hormonal therapy |
| D. | increased ovulatory response by internal hormonal therapy |
| Answer» B. decreased ovulatory response by external hormonal therapy | |
| 8. |
When a fertilized egg cell develops into an embryo, the entropy of the living system |
| A. | decreases |
| B. | increases |
| C. | remains constant |
| D. | none of these |
| Answer» B. increases | |
| 9. |
Which of these established cell lines originate from a mouse embryo? |
| A. | 3T3 |
| B. | BHK |
| C. | HeLa |
| D. | BTK |
| Answer» B. BHK | |
| 10. |
Embryo transfer (ET) refers to the technique by which fertilized ova are collected from the reproductive tract of a genetically |
| A. | superior female and transferred to the inferior |
| B. | inferior female and transferred to the superior |
| C. | balanced female |
| D. | none of the above |
| Answer» B. inferior female and transferred to the superior | |
| 11. |
Multiple ovulation and embryo transfer (MOET) |
| A. | can increase the rate of progress in dairy cattle |
| B. | allows progeny testing of males |
| C. | allows progeny testing of females |
| D. | all of the above |
| Answer» E. | |
| 12. |
The success of embryo transplantation depends upon the ability to obtain an increased number of embryos from animals of superior genetic merit, which can be achieved by the use of |
| A. | exogenous gonadatrophic hormones |
| B. | endogenous gonadatrophic hormones |
| C. | both (a) and (b) |
| D. | FSH (Follicle Stimulating Hormone) |
| Answer» B. endogenous gonadatrophic hormones | |
| 13. |
The technique, mainly used for the diagnosing birth defects in the fetus by means of needle, is called |
| A. | amniocentesis |
| B. | ectogensis |
| C. | transplantation |
| D. | all of the above |
| Answer» B. ectogensis | |
| 14. |
The nucleous of mature unfertilized ovum may be removed by |
| A. | irradiation |
| B. | surgery |
| C. | both (a) and (b) |
| D. | neutralization and homogenization |
| Answer» D. neutralization and homogenization | |
| 15. |
Which of the following best describes artificial insemination? |
| A. | Transplanting an embryo into the uterus |
| B. | Fertilization of an egg in a test tube |
| C. | Selectively breeding healthy animals |
| D. | Taking the sperm and placing it directly |
| Answer» E. | |
| 16. |
Which part of a cell carries the information that is passed from one generation to the next? |
| A. | Cell |
| B. | Nucleus |
| C. | Cytoplasm |
| D. | Chloroplast |
| Answer» C. Cytoplasm | |
| 17. |
Which of the following is not included in out-breeding? |
| A. | Out-crossing |
| B. | Cross-breeding |
| C. | Inbreeding |
| D. | Interspecific hybridisation |
| Answer» D. Interspecific hybridisation | |
| 18. |
Which of the following is the best breeding method for animals which are below average in productivity? |
| A. | Out-breeding |
| B. | Out-crossing |
| C. | Inbreeding |
| D. | Interspecific hybridisation |
| Answer» C. Inbreeding | |
| 19. |
Which breeding is used to overcome inbreeding depression? |
| A. | Out-crossing |
| B. | Cross-breeding |
| C. | Interspecific hybridisation |
| D. | Inbreeding |
| Answer» B. Cross-breeding | |
| 20. |
Which of the following type of animals breeding is used to develop a pure line in any animal? |
| A. | Outcrossing |
| B. | Crossbreeding |
| C. | Hybridisation |
| D. | Inbreeding |
| Answer» E. | |
| 21. |
Which of the following is not associated with inbreeding? |
| A. | Mating between animals of unrelated species |
| B. | Elimination of undesirable characters |
| C. | Increases homozygosity |
| D. | Causes inbreeding depression |
| Answer» B. Elimination of undesirable characters | |
| 22. |
Crosses between different breeds are called inbreeding. |
| A. | True |
| B. | False |
| Answer» C. | |
| 23. |
What is inbreeding? |
| A. | Mating of closely related species |
| B. | Mating of unrelated species |
| C. | Mating of clones |
| D. | Mating of different breeds |
| Answer» B. Mating of unrelated species | |
| 24. |
Animals are selected for breeding on the basis of all of the following except ______ |
| A. | Mammary system and udder |
| B. | ratio of yield to diet |
| C. | Having long ears |
| D. | Disease resistance |
| Answer» D. Disease resistance | |
| 25. |
What is a breed? |
| A. | Animals related by descent |
| B. | Animals related by an ascent |
| C. | Animals not related at all |
| D. | Clone of animals |
| Answer» B. Animals related by an ascent | |
| 26. |
Which of the following is not an aspect of animal breeding? |
| A. | Improve desirable qualities of breeds |
| B. | Increasing the yield |
| C. | Making diseased organisms |
| D. | Making disease resistance breeds |
| Answer» D. Making disease resistance breeds | |