MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Henbane (hyoscyamus niger) is a |
| A. | short day plant |
| B. | long day plant |
| C. | neutral plant |
| D. | day neutral plant |
| Answer» C. neutral plant | |
| 2. |
Disadvantage of cloning is |
| A. | rapid aging |
| B. | low resistance |
| C. | short life span of organism |
| D. | deaging |
| Answer» E. | |
| 3. |
Two male gametes are formed by the |
| A. | vegetative nucleus |
| B. | generative nucleus |
| C. | tube nucleus |
| D. | endosperm nucleus |
| Answer» C. tube nucleus | |
| 4. |
Organism produced as a result of cloning is genetically identical to parent who |
| A. | contributed the egg |
| B. | contributed the nucleus |
| C. | contributed the zygote |
| D. | Both a and b |
| Answer» C. contributed the zygote | |
| 5. |
For cloning of an animal, nucleus is taken from a |
| A. | somatic cell |
| B. | reproductive cell |
| C. | gamete |
| D. | nerve cell |
| Answer» B. reproductive cell | |
| 6. |
Labour pain is caused by contractions in walls of |
| A. | uterus |
| B. | cervix |
| C. | ovary |
| D. | endometrium |
| Answer» B. cervix | |
| 7. |
Testosterone is secreted by cells between seminiferous tubules called |
| A. | interstitial cells |
| B. | spermatids |
| C. | polar cells |
| D. | epithelium cells |
| Answer» B. spermatids | |
| 8. |
In nature, p660 to p730 conversion takes place in |
| A. | red light |
| B. | white light |
| C. | day light |
| D. | dim light |
| Answer» D. dim light | |
| 9. |
During day, a plant possess phytochrome of about |
| A. | p730 |
| B. | p700 |
| C. | p630 |
| D. | p500 |
| Answer» B. p700 | |
| 10. |
In females, production of egg is a |
| A. | continuous process |
| B. | cyclic activity |
| C. | never ending process |
| D. | once in a life time event |
| Answer» C. never ending process | |
| 11. |
Most of major organs of human embryo are formed by the |
| A. | 16th week of pregnancy |
| B. | 15th week of pregnancy |
| C. | 14th week of pregnancy |
| D. | 12th week of pregnancy |
| Answer» E. | |
| 12. |
Nourishing cells around ovule are called |
| A. | nucellus |
| B. | soma |
| C. | endocarp cells |
| D. | mesocarp cells |
| Answer» B. soma | |
| 13. |
Only one of follicle continues to grow while all other follicles break down by a process called |
| A. | follicle suicide |
| B. | follicle death |
| C. | follicle atresia |
| D. | follicle degeneration |
| Answer» D. follicle degeneration | |
| 14. |
Reproduction is mainly divided into |
| A. | two types |
| B. | three types |
| C. | four types |
| D. | five types |
| Answer» B. three types | |
| 15. |
In humans, ovary releases at one time only |
| A. | two ovum |
| B. | one ovum |
| C. | one polar body |
| D. | one oocyte |
| Answer» C. one polar body | |
| 16. |
Genital herpes is caused by |
| A. | neisseria gonorrhoeae |
| B. | treponema pallidum |
| C. | herpes simplex type 2 |
| D. | spirochaete |
| Answer» D. spirochaete | |
| 17. |
Release of oxytocin during labour pain occurs in form of |
| A. | packets |
| B. | stream |
| C. | waves |
| D. | rays |
| Answer» D. rays | |
| 18. |
Sperms are nourished and activated through |
| A. | vas deferens |
| B. | seminal vesicle |
| C. | semen |
| D. | prostate gland |
| Answer» D. prostate gland | |
| 19. |
Clock in plant for measuring duration of darkness is provided by |
| A. | rate of conversion of p660-p730 |
| B. | rate of conversion of p700 to p730 |
| C. | rate of p730 to p660 conversion |
| D. | rate of conversion of p630 to p700 |
| Answer» D. rate of conversion of p630 to p700 | |
| 20. |
Nucleus taken from a somatic cell during cloning is introduced into an |
| A. | sperm cell |
| B. | egg cell |
| C. | zygote |
| D. | gamete |
| Answer» C. zygote | |
| 21. |
Fertilization of ovum takes place in proximal part of the |
| A. | uterus |
| B. | oviduct |
| C. | vagina |
| D. | cervix |
| Answer» C. vagina | |
| 22. |
Queen bee in honey bees |
| A. | carries male gametes from male |
| B. | lay unfertilized egg |
| C. | keeps the sperms stored |
| D. | all of the above |
| Answer» E. | |
| 23. |
Seeds are capable of enduring unfavourable conditions when they are |
| A. | germinating |
| B. | dormant |
| C. | stored |
| D. | stowed |
| Answer» C. stored | |
| 24. |
If fertilized eggs are laid outside female's body and develop there, this phenomenon is called |
| A. | oviparity |
| B. | ovoviparity |
| C. | viviparity |
| D. | viparity |
| Answer» B. ovoviparity | |
| 25. |
Which of the following cells are capable of asymmetric cell division? |
| A. | Hepatocytes |
| B. | Epithelial cells |
| C. | Stem cells |
| D. | Neurons |
| Answer» D. Neurons | |
| 26. |
The likelihood of having a child with Down syndrome increases with _________________ |
| A. | age of father |
| B. | age of mother |
| C. | birth of siblings |
| D. | fertilization rate |
| Answer» C. birth of siblings | |
| 27. |
__________ in males occurs with a much lower level of chromosomal abnormalities than in females. |
| A. | Meiosis |
| B. | Mitosis |
| C. | Translation |
| D. | Transcription |
| Answer» B. Mitosis | |
| 28. |
Presence of an extra copy of which chromosome leads to the Doen syndrome? |
| A. | chromosome 9 |
| B. | chromosome 11 |
| C. | chromosome 17 |
| D. | chromosome 21 |
| Answer» E. | |
| 29. |
Chromosome compaction at prophase requires ______________________ |
| A. | DNA helicase |
| B. | DNA polymerase |
| C. | RNA polymerase |
| D. | Topoisomerase II |
| Answer» E. | |
| 30. |
Cytoskeleton is disassembled in which of the following phase? |
| A. | Prophase |
| B. | Metaphase |
| C. | Anaphase |
| D. | Telophase |
| Answer» B. Metaphase | |
| 31. |
“Cell plate” is a term relative to cytokinesis in ______________________ |
| A. | mammals |
| B. | invertebrates |
| C. | plants |
| D. | fungi |
| Answer» D. fungi | |
| 32. |
Aneuploidy is the condition associated with ______________ |
| A. | transcription inefficiency |
| B. | fragile chromosomes |
| C. | abnormal chromosome umber |
| D. | inability to perform meiosis |
| Answer» D. inability to perform meiosis | |
| 33. |
Meiosis ensures the production of a haploid phase. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 34. |
The sporic or intermediate meiosis is unrelated to gamete formation. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 35. |
Chiasmata are ____ shaped structures. |
| A. | X |
| B. | U |
| C. | V |
| D. | Z |
| Answer» B. U | |
| 36. |
The absence of second X chromosome in a female leads to _______________________ |
| A. | Down syndrome |
| B. | Turner syndrome |
| C. | Alzheimer’s disease |
| D. | Leukemia |
| Answer» C. Alzheimer’s disease | |
| 37. |
Cells that have stopped dividing and are arrested in a state preceding that of DNA synthesis, are said to be in the__________ |
| A. | S phase |
| B. | G₁ phase |
| C. | G₀ phase |
| D. | G₂ phase |
| Answer» D. G₂ phase | |
| 38. |
Which of the following cells do not lack the ability to divide? |
| A. | skin cells |
| B. | nerve cells |
| C. | muscle cells |
| D. | red blood cells |
| Answer» B. nerve cells | |
| 39. |
When was the mechanism behind cytokinesis first discovered? |
| A. | 1950s |
| B. | 1960s |
| C. | 1970s |
| D. | 1980s |
| Answer» B. 1960s | |
| 40. |
Which of the following cells do not usually divide but can be induced to divide? |
| A. | red blood cells |
| B. | liver cells |
| C. | hair cells |
| D. | hair follicles |
| Answer» C. hair cells | |
| 41. |
Centromeres split during the __________________ |
| A. | translation |
| B. | transcription |
| C. | anaphase |
| D. | prometaphase |
| Answer» D. prometaphase | |
| 42. |
Zygotic meiosis only occurs in _______________________ |
| A. | fungi |
| B. | monera |
| C. | vertebrates |
| D. | mammals |
| Answer» B. monera | |
| 43. |
Condensin is a ___________________ |
| A. | multiprotein complex |
| B. | enzyme |
| C. | membrane phospholipid |
| D. | transcription inhibitor |
| Answer» B. enzyme | |
| 44. |
Which is the last phase in mitosis just before the beginning of cytokinesis? |
| A. | telophase |
| B. | metaphase |
| C. | interphase |
| D. | prometaphase |
| Answer» B. metaphase | |
| 45. |
DNA replication occurs during _________________ of the cell cycle. |
| A. | S phase |
| B. | Interphase |
| C. | G₂ phase |
| D. | G₀ phase |
| Answer» B. Interphase | |
| 46. |
Klinefelter syndrome is associated with ________________ |
| A. | human males |
| B. | human females |
| C. | invertebrates |
| D. | protists |
| Answer» B. human females | |
| 47. |
One round of meiotic division gives rise to _____ haploid cells. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 48. |
What will happen if a G₂ phase cell is fused with an M phase cell? |
| A. | premature chromosome compaction |
| B. | chromosome aggregation |
| C. | gene transcription |
| D. | inhibition of transcription |
| Answer» B. chromosome aggregation | |
| 49. |
When were the experiments in an effort to understand cell cycle regulation first conducted? |
| A. | 1970s |
| B. | 1980s |
| C. | 1990s |
| D. | 2000s |
| Answer» B. 1980s | |
| 50. |
The regulatory subunit of maturation-promoting factor (MPF) is called _______________ |
| A. | kinase |
| B. | cyclin |
| C. | tetracyclin |
| D. | interleukin |
| Answer» C. tetracyclin | |