Biology MCQs with answers Page - 81

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Q. The theory which advocates that living beings can arise only from other living beings is termed

  • (A) Bio-genesis
  • (B) Abiogenesis
  • (C) Catastrophism
  • (D) Cosmozoic

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Q. At present, scientists can determine the arrangement or relative positions of genes of DNA sequences on a chromosome. How does this knowledge benefit us?

1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease-resistant animal breeds.
Which of the statements given above is/are correct?

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

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Q. How many layers of skin does a human have?

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

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Q. Genetic alteration probably refers to altering what

  • (A) Genes found on ribosomes
  • (B) Genes found on chromosomes
  • (C) Genes found on cytoplasm
  • (D) All of the above

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Q. Lichens are the best indicator of

  • (A) Air pollution
  • (B) Sound pollution
  • (C) Noise pollution
  • (D) Water pollution

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Q. Skin works as a respiratory organ in which of the following Animals?

  • (A) Cockroach
  • (B) Frog
  • (C) Whale
  • (D) Dog Fish

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Q. Mycology is the branch of botany in which we study about

  • (A) Algae
  • (B) Fungi
  • (C) Bacteria
  • (D) Virus

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Q. Phycology is the branch of botany in which we study about

  • (A) Algae
  • (B) Fungi
  • (C) Ecology
  • (D) Virus

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Q. The DNA bacterium consists of ring-like pieces known as the

  • (A) Plasmids
  • (B) Genes
  • (C) Chromosomes
  • (D) Mesosomes

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Q. It is commonly found in the bottom tidal pools?

  • (A) Spirogyra
  • (B) Ulva
  • (C) Stiogeoclonium
  • (D) Chlamydomonas

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