Biology MCQs with answers Page - 6

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Q. Nymph is the name of young one of

  • (A) butterfly
  • (B) beetle
  • (C) housefly
  • (D) cockroach

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

  • (A) halophytes
  • (B) hydrophytes
  • (C) mesophytes
  • (D) xerophytes

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Q. Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of

  • (A) hormones
  • (B) enzymes
  • (C) proteins
  • (D) vitamins

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Q. Mutation is

  • (A) a factor responsible for plant growth
  • (B) a change which affects the offspring of F2 generation only
  • (C) a change that is inherited
  • (D) a change which affects the parents

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Q. Pollination by wind is called

  • (A) anemophily
  • (B) hydrophily
  • (C) zoophily
  • (D) entomophily

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Q. Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?

  • (A) By cyanobacteria
  • (B) By electrical discharges in the atmosphere
  • (C) By industrially synthesised fertilizer
  • (D) By denitrification

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Q. Ptyalin is an enzyme produced in the

  • (A) salivary glands
  • (B) pituitary glands
  • (C) thyroid glands
  • (D) pancreas

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Q. Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes

  • (A) tetanus
  • (B) influenza
  • (C) cholera
  • (D) typhoid

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Q. Biotic component of the environment does not include

  • (A) Soil system
  • (B) Animal system
  • (C) Micro-organism system
  • (D) Plant system

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