MCQOPTIONS
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MCQOPTIONS
This section includes 200 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Ovoviparity occurs in |
| A. | duckbill platypus |
| B. | spiny ant eater |
| C. | garter snake |
| D. | all of the above |
| Answer» E. | |
| 52. |
The reduction of progesterone level stimulates the pituitary gland to produce |
| A. | oxytocin |
| B. | thyroxine |
| C. | adrenaline |
| D. | epinephrine |
| Answer» B. thyroxine | |
| 53. |
Phytochrome p730 absorbs far red light at |
| A. | 730nm |
| B. | 720nm |
| C. | 700nm |
| D. | 660nm |
| Answer» B. 720nm | |
| 54. |
Corpus luteum starts degenerating if |
| A. | fertilization occurs |
| B. | fertilization does not occur |
| C. | too much estrogen is released |
| D. | none of above |
| Answer» C. too much estrogen is released | |
| 55. |
Sexual reproduction involves |
| A. | mitosis |
| B. | budding |
| C. | meiosis |
| D. | none of the above |
| Answer» D. none of the above | |
| 56. |
The effective temperature considered in vernalisation is |
| A. | around 1 |
| B. | around 4 |
| C. | around 2 |
| D. | around 10 |
| Answer» C. around 2 | |
| 57. |
Oestrous cycle is found in all mammals except |
| A. | dogs |
| B. | cats |
| C. | humans |
| D. | bears |
| Answer» D. bears | |
| 58. |
Between the uterine and foetal tissue a circular organ is established called |
| A. | pericardium |
| B. | scrotum |
| C. | peritoneum |
| D. | placenta |
| Answer» E. | |
| 59. |
The mechanism that produces new generations and maintains a specie is |
| A. | inheritance |
| B. | reproduction |
| C. | heredity |
| D. | budding |
| Answer» C. heredity | |
| 60. |
Tissue culturing can only be done for |
| A. | palnt tissues |
| B. | animal cells |
| C. | both animal and plant cells |
| D. | none of above |
| Answer» D. none of above | |
| 61. |
Genital soreness and ulcers are caused in the disease |
| A. | gonorrhoa |
| B. | syphilis |
| C. | genital herpes |
| D. | acquired immune deficiency syndrome (AIDS) |
| Answer» D. acquired immune deficiency syndrome (AIDS) | |
| 62. |
During the day a plant possess phytochrome |
| A. | p730 |
| B. | p700 |
| C. | p630 |
| D. | p500 |
| Answer» B. p700 | |
| 63. |
Uterine contractions during child birth are strongest from |
| A. | bottom to top |
| B. | top to bottom |
| C. | side ways |
| D. | none of the above |
| Answer» C. side ways | |
| 64. |
In ovoviparous animals the embryo receives its nourishment from |
| A. | mother's blood |
| B. | placenta |
| C. | egg white |
| D. | egg yolk |
| Answer» E. | |
| 65. |
The total gestation period in humans is about |
| A. | 50 days |
| B. | 180 days |
| C. | 100 days |
| D. | 280 days |
| Answer» E. | |
| 66. |
Organisms produced from a single cell by subculculturing are called |
| A. | copies |
| B. | clones |
| C. | replicas |
| D. | partners |
| Answer» C. replicas | |
| 67. |
The discharge of blood and cell debris in case of no fertilization is called |
| A. | ovulation |
| B. | menupause |
| C. | menstruation |
| D. | oestrous cycle |
| Answer» D. oestrous cycle | |
| 68. |
The uterine tube or fallopian tube opens into the |
| A. | oviduct |
| B. | cervix |
| C. | uterus |
| D. | vagina |
| Answer» D. vagina | |
| 69. |
Nourishing cells around ovule are called |
| A. | nucellus |
| B. | soma |
| C. | endocarp cells |
| D. | mesocarp cells |
| Answer» B. soma | |
| 70. |
The release of ovum from the follicle or ovulation is induced by |
| A. | luteinizing hormone (LH) |
| B. | follicle stimulating hormone (FSH) |
| C. | thyroid stimulating hormone (TSH) |
| D. | somatotrophin hormone (STH) |
| Answer» B. follicle stimulating hormone (FSH) | |
| 71. |
A pair of ovoid glandular structures responsible for the production of sperms are called |
| A. | testes |
| B. | ovaries |
| C. | cervix |
| D. | sperm duct |
| Answer» B. ovaries | |
| 72. |
Each testis consists of a highly complex duct system called |
| A. | follicle cells |
| B. | glomerulus |
| C. | seminiferous tubules |
| D. | interstitial cells |
| Answer» D. interstitial cells | |
| 73. |
Menstruation stage lasts for about |
| A. | 1-2 days |
| B. | 3-7 days |
| C. | 5-10 days |
| D. | 10-15 days |
| Answer» C. 5-10 days | |
| 74. |
The organism produced as a result of cloning is genetically identical to the parent who |
| A. | contributed the egg |
| B. | contributed the nucleus |
| C. | contributed the zygote |
| D. | both parents |
| Answer» C. contributed the zygote | |
| 75. |
The periodic reproductive cycle in females is commonly known as |
| A. | oestrous cycle |
| B. | menstrual cycle |
| C. | ovulatory cycle |
| D. | menupause |
| Answer» C. ovulatory cycle | |
| 76. |
Identical twins are the result of |
| A. | meiotic division |
| B. | non-disjunction of chromosomes |
| C. | mitotic division |
| D. | both mitotic and meiotic division |
| Answer» D. both mitotic and meiotic division | |
| 77. |
In case of no fertilization |
| A. | progesterone secretion diminishes |
| B. | progesterone's spongy effect on endometrium reduces |
| C. | endometrium suffers a breakdown |
| D. | all of the above |
| Answer» E. | |
| 78. |
Germ cells in the ovary first produce |
| A. | oogonia |
| B. | primary oocytes |
| C. | secondary oocyte |
| D. | polar body |
| Answer» B. primary oocytes | |
| 79. |
Corticosteroids produced by the foetus enter the maternal blood circulation and cause |
| A. | decrease in progesterone production |
| B. | increase in progesterone production |
| C. | decrease in oxytocin production |
| D. | decrease in testosterone production |
| Answer» B. increase in progesterone production | |
| 80. |
The effect of photoperiodism was first studied in 1920 by |
| A. | darwin |
| B. | garner and allard |
| C. | chargaff |
| D. | alois |
| Answer» C. chargaff | |
| 81. |
Cloning will be subjected to serious moral questions if applied to |
| A. | reptiles |
| B. | humans |
| C. | birds |
| D. | mammals |
| Answer» C. birds | |
| 82. |
Parthenocarpic fruit with no seeds are |
| A. | bananas |
| B. | pineapples |
| C. | oranges |
| D. | all of the above |
| Answer» E. | |
| 83. |
Uterus opens into the vagina through |
| A. | ovary |
| B. | oviduct |
| C. | cervix |
| D. | urethra |
| Answer» D. urethra | |
| 84. |
Light exerts its influence on living organisms through variations in day length called |
| A. | biorythym |
| B. | photoperiod |
| C. | vernalisation |
| D. | none of the above |
| Answer» C. vernalisation | |
| 85. |
The release of oxytocin during labour pain occurs in the form of |
| A. | packets |
| B. | stream |
| C. | waves |
| D. | none of the above |
| Answer» D. none of the above | |
| 86. |
Budding is a method of asexual reproduction found in |
| A. | hydra |
| B. | honey bee |
| C. | bacteria |
| D. | virus |
| Answer» B. honey bee | |
| 87. |
If the two generations during alternation of generation in plants are vegetatively similar it is referred to as |
| A. | heteromorphic |
| B. | isomorphic |
| C. | diplohaplontic |
| D. | none of the above |
| Answer» C. diplohaplontic | |
| 88. |
The seminal fluid or semen provides |
| A. | liquid medium to sperms |
| B. | protection to sperms |
| C. | nourishment to sperms |
| D. | all of the above |
| Answer» E. | |
| 89. |
The disadvantage of cloning is |
| A. | rapid aging |
| B. | low resistance |
| C. | short life span of organism |
| D. | both a and b |
| Answer» E. | |
| 90. |
The duration of chilling treatment in vernalisation varies from |
| A. | four days to four weeks |
| B. | four days to ten days |
| C. | four days to three months |
| D. | one month to three months |
| Answer» D. one month to three months | |
| 91. |
During the night a plant has phytochrome in the form of |
| A. | p730 |
| B. | P660 |
| C. | p700 |
| D. | p660 |
| Answer» C. p700 | |
| 92. |
In human females, the periodic reproductive cycle is completed in approximately |
| A. | 10 days |
| B. | 18 days |
| C. | 28 days |
| D. | 40 days |
| Answer» D. 40 days | |
| 93. |
If fertilized eggs are laid outside the female's body and develop there this is called |
| A. | oviparity |
| B. | ovoviparity |
| C. | viviparity |
| D. | none of above |
| Answer» B. ovoviparity | |
| 94. |
The mucous membrane of urinogenital tract is affected in |
| A. | gonorrhoa |
| B. | syphilis |
| C. | genital herpes |
| D. | acquired immune deficiency syndrome (AIDS) |
| Answer» B. syphilis | |
| 95. |
Cloning is helpful in |
| A. | studying effect of drugs on clonned animals |
| B. | producing desired varieties of plants |
| C. | studying effect of hormones |
| D. | all of the above |
| Answer» E. | |
| 96. |
Fruit development without fertilization with no seed formation is called |
| A. | binary fission |
| B. | pathenocarpy |
| C. | budding |
| D. | grafting |
| Answer» C. budding | |
| 97. |
Diploid parthenogenesis occurs in |
| A. | hydra |
| B. | aphid |
| C. | honey bee |
| D. | none of above |
| Answer» C. honey bee | |
| 98. |
Cloned animals cannot withstand |
| A. | out break of a disease |
| B. | environmental changes |
| C. | epidemics |
| D. | all of the above |
| Answer» E. | |
| 99. |
The events of the menstrual cycle involve the |
| A. | ovarian cycle |
| B. | uterine cycle |
| C. | ovulatory cycle |
| D. | both a and b |
| Answer» E. | |
| 100. |
The biological clock once stimulated produces a hormone for initiating flowering that is |
| A. | cytokinin |
| B. | florigen |
| C. | auxin |
| D. | ethene |
| Answer» C. auxin | |