Biology MCQs with answers Page - 31

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Q. The presence of air cavities is an adaptation of

  • (A) Desert plants
  • (B) Water plants
  • (C) Trees
  • (D) Mesophytes

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Q. The order of appearance of the main group of organisms during evolution can best be described as follows:

  • (A) autotrophic, anaerobic heterotrophic, aerobic heterotrophic
  • (B) anaerobic heterotrophic, water oxidising autotrophic, aerobic heterotrophic
  • (C) aerobic heterotrophic, anaerobic heterotrophic, autotrophic
  • (D) anaerobic heterotrophic, aerobic heterotrophic, water oxidising autotrophic

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Q. Thiamidine dimer formation in DNA is caused by

  • (A) IR-rays
  • (B) UV-rays
  • (C) b & g-rays
  • (D) X-rays

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Q. Clothes keep us warm in winter as they:

  • (A) prevent air from contacting the body
  • (B) prevent the heat of the body from escaping
  • (C) do not radiate heat
  • (D) supply heat

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Q. Match List I (Disease) with List II (Types of disease) and select the right answer using the codes given below List I List II A. Haemophilia 1. Deficiency disease
B. Diabetes 2. Genetic disease
C. Rickets 3. Hormonal disorder
D. Ringworm 4. Fungal infection
Codes A B C D

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

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Q. Which of the following one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms -

  • (A) Ecosystem
  • (B) Eco-niche
  • (C) Ecozone
  • (D) Habitat

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Q. An ant can see the objects all around it due to the presence of

  • (A) Well-developed eyes
  • (B) Simple Eyes
  • (C) Eyes over the head
  • (D) Compound eyes

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Q. Clove, the commonly used spice, is obtained from the:

  • (A) stem
  • (B) root
  • (C) flower bud
  • (D) fruit

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Q. BCG is vaccine meant for protection against Which among the given diseases -

  • (A) Tuberculosis
  • (B) Leprosy
  • (C) Mumps
  • (D) Tetanus

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Q. Plants that grow under average temperature and moisture conditions are called

  • (A) Mesophytes
  • (B) Halophytes
  • (C) Hydrophytes
  • (D) xerophytes

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