Biology MCQs with answers Page - 76

Here, you will find a collection of MCQ questions on Biology. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. A viral species is a group of viruses that has

  • (A) Same ecological niche
  • (B) Same genetic information
  • (C) Both A & B
  • (D) None of the above

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Q. The litmus paper utilized in the chemical laboratories is made of

  • (A) Fern
  • (B) Algae
  • (C) Lichen
  • (D) Fungi

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Q. Which of the following bacterium causes crown gall disease in plants?

  • (A) Bacillus thurigiensis
  • (B) Agrobacterium tumefaciens
  • (C) Pseudomonas fluorescens
  • (D) None of these

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Q. Fossils of blue green algae were found in lime stones with the age almost as old as

  • (A) 1.3 Billion years
  • (B) 2.3 Billion years
  • (C) 3.3 Billion years
  • (D) 4.3 Billion years

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Q. They have also proved extremely useful in our quest of knowledge of outer space.

  • (A) Bacteria
  • (B) Fungi
  • (C) Yeasts
  • (D) None of the above

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Q. Chemicals like ________ may be added to different foods or fruits to prevent or retard the growth microorganisms.

  • (A) Potasium
  • (B) Calcium
  • (C) Potassium metabisulphite
  • (D) Sulphur

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Q. Eutrophication is the result of

  • (A) Bryophytes
  • (B) Algae and aquatic plants
  • (C) Gymnosperm
  • (D) Pteridophytes

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Q. Severe deficiency of Vitamin D results in ____________ .

  • (A) scurvy
  • (B) rickets
  • (C) night blindness
  • (D) osteomalacia

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Q. People living in high altitudes (like mountains) usually have a

  • (A) smaller number of Red Blood Cells
  • (B) larger number of Red Blood Cells
  • (C) smaller number of White Blood Cells
  • (D) larger number of White Blood Cells

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Q. Vitamin ____________ is needed for the formation of a light-sensitive pigment in the retina.

  • (A) A
  • (B) B
  • (C) C
  • (D) B complex

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