Biology MCQs with answers Page - 65

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Q. W.M. Stanley was awarded the Nobel Prize for being the first scientist to obtain a virus in pure crystalline form. The virus was

  • (A) tobacco mosaic virus
  • (B) polio virus
  • (C) rabies virus
  • (D) cauliflower mosaic virus

A

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Q. An electron microscope can be used for viewing

  • (A) inside of the human stomach
  • (B) inside of the human eye
  • (C) structures of bacteria and viruses
  • (D) electrons and other elementary particles

A

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Q. Consider the following statements:
1.All living organisms respire
2.Viruses are anaerobes like many bacteria
3.All higher plants and animals respire aerobically because energy released during anaerobic respiration is much less
4.Leaves are the respiratory organs of plants

Which of the above statements are true? Select the correct answer from the following:

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

A

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Q. The number of bones in the human body of an adult is approximately

  • (A) not fixed
  • (B) 250
  • (C) 210
  • (D) 206

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Q. In urine formation, the colloidal osmotic pressure aids in the process of

  • (A) ultrafiltration
  • (B) tubular reabsorption
  • (C) tubular secretion
  • (D) both (b ) & (c )

A

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Q. Which of the following pairs is correctly matched? Branch of Biology Field of study
1.Apiculture - Honey-bee culture
2.Olericulture - Cultivation of floral crops
3.Pomology - Fruit crops cultivation
4.Laryngology - Diseases of throat and their treatment

Select the correct answer from the following:

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

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Q. The genetic code is called degenerate because:
1.The codons for all amino acids degenerate after the synthesis of each protein.
2.Most amino acids are coded by more than one codon of which all but one degenerate.
3.Most amino acids are coded by more than one codon.
Which of the above statement/s is/are correct?

  • (A) 1 and 3
  • (B) 2 only
  • (C) 1 only
  • (D) 3 only

A

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Q. The diaphragm assists in

  • (A) circulation of blood
  • (B) excretion of waste
  • (C) digestion
  • (D) respiration

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Q. Consider the following statements:
1.When a red rose is illuminated with red light, its leaves become warmer than the petals.
2.The energy of red light is absorbed by the leaves.
Which of the above statements is/are true?

  • (A) Both
  • (B) 2 only
  • (C) 1 only
  • (D) Neither 1 nor 2

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Q. The gonadotrophic-releasing hormones reach the anterior pituitary through

  • (A) hypothalamo-hypophyseal nerve tract
  • (B) neurohypophysis
  • (C) hypothalomo-hypophyseal portal system
  • (D) hypothalamus

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