Tag: biogeochemical cycle

Questions Related to biogeochemical cycle

Cycling of elements in an ecosystem is called as

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

  1. Chemical cycle

  2. Geochemical cycle

  3. Biogeochemical cycle

  4. Geological cycle

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Correct Option: C
Explanation:
The term biogeochemical cycle is used for exchange or circulation of biogenetic nutrients between living and non living components of biospheres. The biogenetic nutrients are essential elements required by organisms for their body-building and metabolism which are provided by earth and returned to earth after the death of organisms and/or through excreta of animals
So, the correct answer is 'Biogeochemical cycle'

Which of the following cycle would be affected if decomposers of an ecosystem vanish?

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

  1. Producer's cycle

  2. Consumer's cycle

  3. Decomposer's cycle

  4. Biogeochemical cycle

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Correct Option: D
Explanation:

The term biogeochemical cycles is used for exchange or circulation of biogenetic nutrients between living and nonliving components of biosphere. Biogenetic nutrients are essential elements required by organisms for their body building and metabolism, which are provided by earth and returned to earth after their death by the decomposition activity of decomposers. If decomposition is not carried out then biogenetic nutrients will slowly become locked up in the bodies of plants and animals and ultimately the biogeochemical cycles will stop.

Which one of the following pairs is a sedimentary type of biogeochemical cycle

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

  1. Phosphorus and carbon dioxide

  2. Oxygen and nitrogen

  3. Phosphorus and nitrogen

  4. Phosphorus and sulphur

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Correct Option: D

If all decomposers are removed from an ecosystem, what will happen?

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

  1. All consumer will die

  2. Energy cycle will be inverted

  3. Balance of biogeochemical cycle will be disturbed

  4. Only herbivores will die

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Correct Option: C
Explanation:

Decomposers are saprotrophs, which decompose the organic remains by secreting extracellular digestive enzymes. Due to degradation of organic remains, decomposers are also called as reducers. They are also known as mineralisers as they release minerals trapped in organic remains. Detrivores are decomposers as well as scavengers, e.g., earthworm. Decomposition of organic wastes and dead and decaying plants and animals returns the minerals locked in living systems back to the environment. Thus, decomposition is very important for the biogeochemical cycles, or nutrient cycling.

Living organisms require ............. to produce proteins and nucleic acids in their body.

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

  1. Oxygen

  2. Nitrogen

  3. Carbon

  4. Water

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Correct Option: B

Which one of the following is not a gaseous biogeochemical
cycle in ecosystem

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

  1. Sulphur cycle

  2. Phosphorus cycle

  3. Nitrogen cycle

  4. Carbon cycle

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Correct Option: B

Cycling of elements in an ecosystem is called

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

  1. Chemical cycle

  2. Geochemical cycle

  3. Biogeochemical cycle

  4. Geological cycle

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Correct Option: C

The circulation or cycling of elements in an ecosystem is known as

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

  1. Geological cycling

  2. Geo-chemical cycling

  3. Bio-geochemical cycling

  4. Nutrient cycling

Show answer
Correct Option: D
Explanation:

Nutrient cycling is defined as the circulation or cycling of elements in an ecosystem. It is an essential process of an ecosystem. In this, a particular nutrient or element is transferred from environment to one living being to another living being and comes back to the environment. The various elements include carbon, nitrogen, sulphur, phosphorous, etc. 

Thus, the correct answer is 'Nutrient cycling.'

In ecosystem, cycling of nutrients is called

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

  1. Geological cycle

  2. Biogeochemical cycle

  3. Geochemical cycle

  4. Chemical cycle

Show answer
Correct Option: B
Explanation:

In ecosystem, cycling of nutrients is called biogeochemical cycle. In this, essential nutrients moves through biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments in an ecosystem. The various biogeochemical cycle includes carbon cycle, nitrogen cycle, phosphorous cycle, oxygen cycles. 

Thus, the correct answer is 'Biogeochemical cycle.'

____________ is a mixture of 50 - 90% of methane

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

  1. Natural gas

  2. Air

  3. Water

  4. Bio diesel

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Correct Option: A