Man and Environment Multiple Choice Questions 21 PDF Download

Practice man and environment MCQs, grade 10 online biology test 21, ecology multiple choice questions and answers. Ecology revision test has biology worksheets, helping answer key with choices as heterotrophs, autotrophs, tertiary autotrophs and secondary autotrophs of multiple choice questions (MCQ) with ecology quiz as considering earth's ecosystem, producers are called for competitive exam prep, viva interview questions. Free biology study guide to practice ecology quiz to attempt multiple choice questions based test.

MCQs on Man and Environment Quiz PDF Download Worksheets 21

MCQ. Considering the Earth's ecosystem, the producers are called

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


MCQ. Considering the kind of symbiosis, the classification of parasites includes

  1. endoparasites
  2. ectoparasites
  3. digestion parasites
  4. both a and b


MCQ. In biosphere, the principal decomposers are

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


MCQ. The petroleum burning in the air leads to the

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


MCQ. 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