Tag: biogeochemical cycle

Questions Related to biogeochemical cycle

Natural sources of sulfur dioxide involves:

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

  1. Respiration

  2. Cement production

  3. PAN

  4. Volcanic eruptions

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Correct Option: D

Which statement is not correct?

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

  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

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Correct Option: A

Which one of the following pairs is not correctly matched?

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

  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

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Correct Option: A

Which gas is known as rotten egg smell?

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

  1. $H _{2}S$

  2. $CO _{2}$

  3. $O _{2}$

  4. Argon

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Correct Option: A

Which gas is produced by reduction of sulphur?

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

  1. $CO$

  2. $CO _{2}$

  3. $H _{2}S$

  4. $Nox$

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Correct Option: C

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

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

  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

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Correct Option: D
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'

The reservoir for the gaseous type of biogeochemical cycle exists in.

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

  1. Stratosphere

  2. Atmosphere

  3. Ionosphere

  4. Lithosphere

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Correct Option: B
Explanation:

The reservoir for gaseous type of nutrient cycles, e.g., nitrogen, carbon cycle exist in the atmosphere.

Which of the following are the examples of biogeochemical cycle?

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

  1. Nitrogen cycle

  2. Krebs cycle

  3. Electron cycle

  4. All of the above

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Correct Option: A
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.

The reservoir pool for gaseous cycles of matter is

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

  1. Atmosphere

  2. Hydrosphere

  3. Both (A) and (B)

  4. Lithosphere

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Correct Option: A
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.

Study of biogeochemical cycles is called as biogeochemistry, it involves

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

  1. Cycling of energy

  2. Cycling of gases

  3. Cycling of nutrients

  4. Cycling of water

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Correct Option: C
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.