Tag: biogeochemical cycle

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Questions Related to biogeochemical cycle

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
Multiple choice botany energy flow in an ecosystem biogeochemical cycle nutrient cycles species, communities and ecosystems

Which one of the following is not one of the three aspects studied in biogeochemical cycling?

  1. The nature and size of natural reservoir

  2. The rate of movement between reservoirs

  3. Interaction between different biogeochemical cycles

  4. Creation of their own biogeochemical cycles by new species
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The cyclic movement of the elements from the abiotic system to the biotic system and back again is the biogeochemical cycle. These chemicals form the compounds of food, so these are also known as nutrient cycles.
Some of the important biogeochemical cycles are carbon cycle, Oxygen cycle nitrogen cycle, Phosphorus cycle.
Following aspect are studied in biogeochemical cycling-
The nature and size of the natural reservoir
The rate of movement between reservoirs
The interaction between different biogeochemical cycles
The correct option is the 'creation of their own biogeochemical cycles by new species'
Multiple choice botany energy flow in an ecosystem biogeochemical cycle nutrient cycles species, communities and ecosystems

Which of the following are the examples of biogeochemical cycle?

  1. Nitrogen cycle

  2. Krebs cycle

  3. Electron cycle

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A biogeochemical cycle involves biological, geological and chemical factors. The circulation of chemical nutrients like carbon, oxygen, nitrogen, phosphorus, calcium, and water, etc. between biotic and abiotic components of the biosphere is known as a biogeochemical cycle.
So, the correct option is option A.

Multiple choice botany energy flow in an ecosystem biogeochemical cycle nutrient cycles species, communities and ecosystems

The reservoir pool for gaseous cycles of matter is

  1. Atmosphere

  2. Hydrosphere

  3. Both (A) and (B)

  4. Lithosphere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biogeochemical cycles involves the exchange of minerals between abiotic and biotic components of the biosphere. It is mainly of three types hydrological, gaseous and sedimentary.
Gaseous cycle involves the transportation of matter through the atmosphere. Some examples of the gaseous cycle are carbon cycle, nitrogen cycle, oxygen cycle.
So, the correct answer is option A.

Multiple choice botany energy flow in an ecosystem biogeochemical cycle nutrient cycles species, communities and ecosystems

Study of biogeochemical cycles is called as biogeochemistry, it involves

  1. Cycling of energy

  2. Cycling of gases

  3. Cycling of nutrients

  4. Cycling of water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The term biogeochemical cycle is used for exchange or circulation of biogenetic nutrients between living and nonliving components of biosphere. Cycling of biogenetic nutrients is an important characteristic of an ecosystem.