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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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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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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85. What name has been given to the fear of crossing roads?
[A] Arthrophobia
[B] Atychiphobia
[C] Aichmophobia
[D] Agyrophobia

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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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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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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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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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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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