Biology MCQs with answers Page - 110

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Q. Some vertebrae in birds fuse to form

  • (A) synsacrum
  • (B) sacrum
  • (C) coccyx
  • (D) none of the above

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Q. Haptens are:

  • (A) Isoantigens
  • (B) Pseudoantigens
  • (C) Incomplete antigens
  • (D) Antibodies

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Q. Which among the given microorganisms is used in milk curdling

  • (A) Leuconostoc
  • (B) Acetobacter
  • (C) Lactobacillus
  • (D) Bacillus

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Q. Which among the given seeds benefit a patient of diabetes mellitus by normalising his blood sugar level?

  • (A) Fenugreek seeds
  • (B) Mustard seeds
  • (C) Coriander seeds
  • (D) Cumin seeds

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Q. Which among the given is a nonrenewable source of energy

  • (A) Solar
  • (B) Wind
  • (C) Biogas
  • (D) Coal

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Q. Which of the following one of the following substances is used for preservation of food grains -

  • (A) Sodium benzoate
  • (B) Vinegar
  • (C) Sodium chloride
  • (D) Potassium permanganate

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Q. Insufficient dietary iodine can cause

  • (A) Cretinism
  • (B) Giant build
  • (C) Small thyroid
  • (D) Enlarged thyroid

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Q. Why does a piece of bread taste sweet when chewed?

  • (A) the sugar content of bread is drawn out
  • (B) the action of saliva converts starch into maltose
  • (C) the taste buds are stimulated by chewing
  • (D) it does not taste sweet; it is just an illusion

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Q. In the grass lands, trees do not replace the grasses as a part of an ecological succession as of

  • (A) Limited sun light & paucity of nutrients
  • (B) Insect & fungi
  • (C) Water limits & fire
  • (D) None of the options

A

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Q. Algae often float on surface of water during the day but sink down during the night due to

  • (A) Evolution and trapping of oxygen bubbles during the day in their photosynthesis
  • (B) Becoming light as they consume most of their food in the night
  • (C) Release of absorbed air by warming of water
  • (D) Warming action of sun during the day

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