General Science - Biology MCQs
41. The monocarpic plants produce flowers only ________?
[A] Once in a year
[B] Once in a season
[C] Once in lifetime
[D] One flower per plant
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Correct Answer: C [Once in lifetime]
42. Which among the following is the correct meaning of Phyllotaxy?
[A] Classification of plants as per the leaves structure
[B] The manner of arrangement of leaves in stem or branch
[C] The manner the leaves fall from the branches
[D] The anatomy of leaves in angiosperms
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Correct Answer: B [The manner of arrangement of leaves in stem or branch]
43. In which of the following insects, a pigment called luciferin is found?
[A] Housefly
[B] Firefly
[C] Sandfly
[D] Fruitfly
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Correct Answer: B [Firefly]
44. A plant belonging to which of the following groups would show least adaptation to marine water?
[A] Pteridophytes
[B] Gymnosperms
[C] Angiosperms
[D] Bryophytes
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Correct Answer: C [Angiosperms]
45. A treatment with which among the following plant hormones would prevent water loss from the plant leaves, by reducing transpiration, in times of low water availability?
[A] Ethylene
[B] Abscisic Acid
[C] Gibberelic Acid
[D] Auxin
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Correct Answer: B [Abscisic Acid]
46. A tablet of which among the following Vitamins should be advised to be used after purification of water by Iodine as a disinfectant?
[A] Vitamin A
[B] Vitamin B
[C] Vitamin C
[D] Vitamin D
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Correct Answer: C [Vitamin C]
47. Who among the following scientists is known for devising four criteria designed to establish a causal relationship between a causative microbe and a disease?
[A] Louis Pasteur
[B] Emil Behring
[C] Ivan Pavlov
[D] Robet Koch
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Correct Answer: D [Robet Koch]
Notes:
Dr. Robert Koch was a German (Prussian) physician. In 1877 he isolated Bacillus anthracis (causative agent of Anthrax) . He also isolated Tuberculosis bacillus (Causative agent of TB) and Vibrio cholera (causative agent of Cholera). He is also known to develop Koch’s postulates, the four criteria designed to establish a causal relationship between a causative microbe and a disease. He was awarded the Nobel Prize in Physiology or Medicine for his tuberculosis findings in 1905.
48. A combination of several medicines called SHREZ is used in the treatment of which among the following diseases?
[A] HIV/ AIDS
[B] Diphtheria
[C] Tuberculosis
[D] Malaria
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Correct Answer: C [Tuberculosis]
49. The most popular Zero Calorie sugar substitutes in the market are made up of Sucralose, as an artificial sweetner. Why sucralose does not have calories?
[A] Because the Sucralose is 600 times more sweet than Sucrose (Natural Sugar) and thus its low quantity gives same taste but zero calories when it is digested in the body.
[B] Because the chemical composition of Sucralose is such that its oxidation gives less calories in body compared to the Sucrose.
[C] Because Sucralose is not a Carbohydrate
[D] Because Sucralose is not digested in the body
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Correct Answer: D [Because Sucralose is not digested in the body]
50. As per the WHO definition, within how many days of the termination of pregnancy, the death of a woman is counted in the Maternal Mortality?
[A] 36 Days
[B] 42 Days
[C] 56 Days
[D] 60 Days
Show Answer
Correct Answer: B [42 Days]
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