Biology MCQs with answers Page - 47

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Q. Colour blindness is a

  • (A) sex-linked character
  • (B) sex-limited character
  • (C) sex-influenced character
  • (D) none of the above

A

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Q. Serpasil is obtained from the

  • (A) plant Rauwalfia serpentine
  • (B) extracts of tobacco leaf
  • (C) extracts of ginger root
  • (D) cinchona tree

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Q. In certain diseases antibiotics are administered. The object is

  • (A) Inhibit the growth of bacteria
  • (B) Produce toxins against bacteria
  • (C) Stimulate production of white blood cells for fighting the disease
  • (D) Stimulate production of antibodies

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Q. Which statement is one component of the cell theory?

  • (A) DNA is the basis of genetic transfer
  • (B) Tissues are formed from combinations of cells
  • (C) All living cells arise from preexisting cells
  • (D) All cells are composed of same organelles

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Q. Which of the following diseases are sexually transmitted?
1.Trichomoniasis and AIDS
2.Chlamydia and syphilis
3.Genital herpes and oriental sore
4.Gonorrhea and giardiasis

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

A

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Q. Following fertilization, implantation usually occurs

  • (A) within 1 to 3 days
  • (B) after 4 days.
  • (C) between 12 and 24 hours
  • (D) almost immediately

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Q. The smallest living cell is that of a

  • (A) bacterium
  • (B) mycoplasma
  • (C) bread mold
  • (D) virus

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Q. Thermostat that regulates temperature in human body is located in

  • (A) pineal gland
  • (B) hypothalamo-hypophyseal nerve tract
  • (C) hypothalamus
  • (D) adenohypophysis

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Q. Palaentology is the study of:

  • (A) Fossils
  • (B) Worms
  • (C) Parasites
  • (D) Plant pests

A

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Q. Night blindness is caused by the deficiency of

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

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