General Science – Biology MCQs

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

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

Correct Answer: (B) Gibberellins

Answer Explanation:

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

Correct Answer: (B) Photophobia

Answer Explanation:

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

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

Correct Answer: (C) Bacteria

Answer Explanation:

The mitochondria are common in Eukaryotic cells. Bacteria is Prokaryotic

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