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MCQs

Total Questions : 216 | Page 3 of 22 pages
Question 21. Small fish and crustaceans are also used to kill the larvae of
  1.    butterfly
  2.    aphids
  3.    mosquitos
  4.    pupa
 Discuss Question
Answer: Option C. -> mosquitos
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 22. The conversion of gaseous nitrogen into the nitrates with the help of bacteria is classified as
  1.    biological oxygen fixation
  2.    atmospheric oxygen fixation
  3.    atmospheric nitrogen fixation
  4.    biological nitrogen fixation
 Discuss Question
Answer: Option D. -> biological nitrogen fixation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 23. The combination of atmospheric nitrogen with hydrogen under high temperature and pressure is classified as
  1.    atmospheric oxygen fixation
  2.    atmospheric nitrogen fixation
  3.    industrial nitrogen fixation
  4.    biological nitrogen fixation
 Discuss Question
Answer: Option C. -> industrial nitrogen fixation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 24. The process of denitrification returns nitrogen into the
  1.    ecosystem
  2.    atmosphere
  3.    biosphere
  4.    organism
 Discuss Question
Answer: Option B. -> atmosphere
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 25. The atmospheric gaseous nitrogen is converted during lightning and thunderstorms into
  1.    oxides of carbon
  2.    oxides of oxygen
  3.    oxides of nitrogen
  4.    nitric acid
 Discuss Question
Answer: Option C. -> oxides of nitrogen
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 26. Considering the ecological organizations, the range between tops of the highest mountains and floor of oceans is classified as
  1.    biosphere
  2.    exosphere
  3.    troposphere
  4.    stratosphere
 Discuss Question
Answer: Option A. -> biosphere
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 27. The interactions between the members of different species are called
  1.    interspecific interactions
  2.    competition
  3.    intraspecific interactions
  4.    predation
 Discuss Question
Answer: Option A. -> interspecific interactions
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 28. The kind of parasitism in which the whole life of parasites are spent as parasites is called
  1.    permanent parasitism
  2.    temporary mutualism
  3.    permanent mutualism
  4.    temporary parasitism
 Discuss Question
Answer: Option A. -> permanent parasitism
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 29. Considering the following, the abiotic components of the ecosystem includes
  1.    grass and
  2.    birds and snakes
  3.    basic elements and soil
  4.    cattle and deer
 Discuss Question
Answer: Option C. -> basic elements and soil
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 30. Ammonia is converted into nitrites by
  1.    fungi
  2.    virus
  3.    algae
  4.    bacteria
 Discuss Question
Answer: Option D. -> bacteria
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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