General Science - Biology MCQs
81. What fraction of Body’s calcium is stored in Bones and teeth?
[A] 85%
[B] 90%
[C] 94%
[D] 99%
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82. Which among the following is NOT a true bast fiber?
[A] Jute
[B] Hemp
[C] Flax
[D] Cotton
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Correct Answer: D [Cotton]
Notes:
Please note that Bast Fibers are obtained from Phloem
83. The metals in which among the following groups are required in maximum quantities in a living organism?
[A] Potassium, Manganese, Molybdenum, Calcium
[B] Potassium, Molybdenum, Copper, Calcium
[C] Pottassium,Sodium, Magnesium, Calcium
[D] Sodium, Magnesium, Copper, Manganese
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Correct Answer: C [Pottassium,Sodium, Magnesium, Calcium]
84. Which among the following helps to determine the character of a cell?
[A] Nucleus
[B] Chromosomes
[C] Genes
[D] Plasma
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Correct Answer: C [Genes]
85. What name has been given to the fear of crossing roads?
[A] Arthrophobia
[B] Atychiphobia
[C] Aichmophobia
[D] Agyrophobia
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Correct Answer: D [Agyrophobia]
86. What is the average life of Red Blood cells in our body?
[A] 30-40 days
[B] 70-80 days
[C] 100-120 days
[D] 160-180 days
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Correct Answer: C [100-120 days]
87. Which of the following plant growth hormone was recognized by Japanese scientists?
[A] Auxin
[B] Gibberellins
[C] Abscisic acid
[D] Cytokinin
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Correct Answer: B [Gibberellins]
Notes:
Gibberellins, first recognized in 1926 by a Japanese scientist, Eiichi Kurosawa. He was studying foolish seedling disease in Rice called as bakanae
88. Which among the following does not fall in the category of morbid fear or Phobia?
[A] Claustrophobia
[B] Photophobia
[C] Algophobia
[D] Anthophobia
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Correct Answer: B [Photophobia]
Notes:
Photophobia is not a fear. It is excessive sensitivity to light and the aversion to sunlight or well-lit places,
Claustrophobia is fear of confined places,
Algophobia is fear of pain,
Anthophobia is fear of flowers,
89. Which among the following is the correct location of pyloric sphincter in human body?
[A] between Oral cavity and esophagus
[B] between Esophagus and Stomach
[C] between Stomach and duodenum
[D] between duodenum and Jejunum
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Correct Answer: C [between Stomach and duodenum]
90. In which of the following, the cellular power plants – Mitochondria are absent ?
[A] Red algae
[B] Green Algae
[C] Bacteria
[D] Brown Algae
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Correct Answer: C [Bacteria]
Notes:
The mitochondria are common in Eukaryotic cells. Bacteria is Prokaryotic
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