Biology MCQs with answers Page - 8

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Q. Which of the following is an antioxidant ?

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

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Q. The red, orange and yellow colours of leaf is due to :

  • (A) Aldehydes
  • (B) Tannis
  • (C) Lignins
  • (D) Carotenoid

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Q. Crude oil is sometimes termed sweet because it is :

  • (A) sweet in taste due to dissolved sugars
  • (B) mildly sweet due to low sulfur content
  • (C) Less acidic
  • (D) Less alkaline

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Q. With reference to the latest developments in stem cell research, consider the following statements.
1. The only source of human stem cells are the embryos at blastocyst stage.
2. The stem cells can be derived without causing destruction to blastocysts.
3. The stem cells can regenerate themselves in vitro virtually forever.
4. Indian research centres also created a few cell lines, which can be developed into many types.
Which of these statements are right?

  • (A) 1, 2 and 4
  • (B) 3 and 4
  • (C) 1, 2 and 3
  • (D) 1, 2 and 4

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Q. Which among the given statements is/are right?
1. Viruses lack enzymes necessary for the generation of energy.
2. Viruses can be cultured in any synthetic medium.
3. Viruses are transmitted from one organism to another by biological vectors only.
Select the right answer using the codesgiven below

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

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Q. In a food chain, the solar energy utilized by plants is only

  • (A) In a food chain, the solar energy utilized by plants is only
  • (B) 10 per cent
  • (C) 0.01 per cent
  • (D) 1 per cent

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Q. White blood corpuscles in the human body have a diameter of approximately

  • (A) 0.07 mm
  • (B) 0.0007 mm ",0.007 mm",0.7 mm"
  • (C) 0.007 mm
  • (D) None of these

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Q. A man receives his X-chromosome from

  • (A) his mother only
  • (B) his father only
  • (C) either his mother or his father
  • (D) both his mother and father

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