Tag: nitrogen and phosphorus cycles

Quizzes (0) Questions (45)

Questions Related to nitrogen and phosphorus cycles

Multiple choice biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

Which statement is not correct?

  1. Humification is followed by mineralization

  2. Low temperature and anaeobiosis accelerate decomposition

  3. The decomposition is slow if the detritus is rich in lignin and chitin

  4. Humus is highly resistance to microbial action
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement B is incorrect because low temperatures and anaerobiosis inhibit or slow down decomposition rather than accelerate it. Warm, moist, and aerobic conditions favor rapid microbial decomposition. The other statements regarding humification, lignin-rich detritus, and humus resistance are correct.

Multiple choice biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

Which one of the following pairs is not correctly matched?

  1. Production of sulphur dioxide - Burning of coal

  2. Depletion of ozone layer - Release of chlorofluorocarbons in the atmosphere

  3. Eutrophication - Increase in nitrogen and phosphorus contents in aquatic bodies

  4. Dec:ease in B.O.D. of pond water - Increase in global temperature
Reveal answer Fill a bubble to check yourself
D Correct answer