Biology MCQs with answers Page - 114

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Q. Which among the given is a fish -

  • (A) Whale
  • (B) Salmon
  • (C) Lobster
  • (D) Jelly fish

A

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Q. A group of genes whose activity is coordinated by a DNA site is called:

  • (A) polypeptide
  • (B) polysome
  • (C) cistron
  • (D) operon

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Q. The functions of pacemaker is

  • (A) Regulation of digestion
  • (B) Regulation of urine formation
  • (C) Initiation of respiration
  • (D) Initiation of heart beat

A

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Q. Cod liver oil from fish is rich in which vitamin -

  • (A) Vitamin C
  • (B) Vitamin B
  • (C) Vitamin A
  • (D) Vitamin D

A

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Q. Which of the following vitamin deficiency causes the disease, Pernicious anaemia -

  • (A) Vitamin B6
  • (B) Vitamin B5
  • (C) Vitamin B12
  • (D) Vitamin C

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Q. A cellulosic wall is found in the cells of

  • (A) animals
  • (B) bacteria
  • (C) fungi
  • (D) plants

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Q. Which of the following base in place of thymine is present in RNA

  • (A) Cytosine
  • (B) Guanine
  • (C) Adenine
  • (D) Uracil

A

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Q. Consider the following kinds of organisms
1. Bat
2. Bee
3. Bird
Which of the above is /are pollinating agent/ agents?

  • (A) 1 and 3
  • (B) 1 and 2
  • (C) Only 2
  • (D) All of these

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Q. If a mouse of over eight times its normal size has been produced by introducing the human growth hormone gene, the technique involved is called

  • (A) hormonal feeding
  • (B) hybridisation
  • (C) mutation breeding
  • (D) genetic engineering

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Q. We lose consciousness if the blood flow to the brain is cut off for more than

  • (A) 15 s
  • (B) 5 s
  • (C) 5 min
  • (D) 2 s

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