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Class 10 Biology MCQs (Grade 10) From Textbook

Class 10 Biology Competitive Exam MCQs – Practice Test 21 (Chapter 7)

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Free "Class 10 Biology Study" App with MCQ: Considering the Earth's ecosystem, the producers are called; with answers: heterotrophs, autotrophs, tertiary autotrophs, and secondary autotrophs. Solve Ecology MCQ Questions, download Google e-Book (Free Chapter) to join science classes.

Man and Environment MCQs – Practice Test 21 PDF Download

MCQ 101: Considering the Earth's ecosystem, the producers are called:

  1. autotrophs
  2. heterotrophs
  3. tertiary autotrophs
  4. secondary autotrophs

MCQ 102: Considering the kind of symbiosis, the classification of parasites includes:

  1. endoparasite only
  2. ectoparasite only
  3. digestion parasites
  4. endoparasite and ectoparasite

MCQ 103: In the biosphere, the principal decomposers are:

  1. birds
  2. grasshoppers
  3. protozoan
  4. fungi and bacteria

MCQ 104: The petroleum burning in the air leads to the:

  1. methane
  2. oxygen
  3. sulphur dioxide
  4. nitrogen dioxide

MCQ 105: The process in which nitrites and nitrates are reduced into nitrogen gas by the denitrification of bacteria is called:

  1. ammonification
  2. assimilation
  3. nitrification
  4. denitrification

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