Tag: species, communities and ecosystems

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Questions Related to species, communities and ecosystems

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

Which of the following occurs in abiotic component of an ecosystem?

  1. Flow of energy

  2. Cycling of materials

  3. Consumers

  4. Flow of energy and cycling of materials
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An ecosystem is made up of biotic and abiotic components. Biotic components include plants, animals, microorganism. Abiotic components include nonliving things such as water, air, temperature, materials of the soil. Essential material includes minerals like carbon, nitrogen, phosphorous. Cycling of materials include release of minerals back to the environment. 

Thus, the correct answer is 'Cycling of materials.'

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

Which ones are reservoirs of phosphorus and nitrogen cycles respectively?

  1. Consumers

  2. Atmosphere and bedrock

  3. Atmosphere and producers

  4. Bedrock and atmosphere
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are various of abiotic reservoirs in which the nutrients are recycled, released and stored in atmosphere. Atmosphere is the reservoir of carbon and nitrogen. Hence, these cycles are also called atmospheric cycles. Water is the reservoir of hydrogen and oxygen. Hence, these cycles are called as hydrological cycles. Bedrock is the reservoir of phosphorous. Hence, it is also called as sedimentary cycle.

Thus, the correct answer is 'Bedrock and atmosphere.'

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

For the sedimentary type of biogeochemical cycles, the reservoir is 

  1. Atmosphere

  2. Water

  3. Earth's crust

  4. Living organisms
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Biogeochemical cycles are also called as nutrient cycles. It includes gaseous cycles such as carbon cycle, oxygen cycle and sedimentary cycle. Sedimentary cycle consists of weathering of an existing rock followed by the erosion of minerals, transport and deposition. It has earth's crust as the reservoir pool. Examples of sedimentary cycle include sulphur cycle, phosphorous cycle, iron cycle, calcium cycle.

Thus, the correct answer is 'Earth's crust.'

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

In which of the following both pairs have correct combination?

  1. Gaseous nutrient cycle - Carbon and nitrogen

    Sedimentatry nutrient cycle - Sulphur and phosphorus

  2. Gaseous nutrient cycle - Carbon and sulphur

    Sedimentary nutrient cycle - Nitrogen and phosphorus

  3. Gaseous nutrient cycle - Nitrogen and sulphur

    Sedimentary nutrient cycle - Carbon and phosphorus

  4. Gaseous nutrient cycle - Sulphur and phosphorus

    Sedimentary nutrient cycle - Carbon and nitrogen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

There are various nutrient cycles in an ecosystem which recycles the essential nutrients. The cycles are also called as biogeochemical cycles. Gaseous nutrient cycles include carbon cycle, oxygen cycle, nitrogen cycle. In these cycles, the element is released in the air. Sedimentary nutrient cycles include sulphur cycle, phosphorus cycle. In these cycles, the element is released in the sedimentary rocks.

Thus, the correct answer is 'Gaseous nutrient cycle - Carbon and nitrogen
Sedimentatry nutrient cycle - Sulphur and phosphorus.'

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

A biogeochemical cycle without an atmospheric component is

  1. Sulphur

  2. Nitrogen

  3. Phosphorus

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

A biogeochemical cycle is also called as nutrient cycle. It is of various types such as sedimentary cycle, gaseous cycle. Sedimentary cycle consists of weathering of an existing rock followed by the erosion of minerals, transport and deposition. It has earth's crust as the reservoir pool. The sulphur cycle is a sedimentary cycle without an atmospheric component. 

Thus, the correct answer is 'Sulphur.'

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

For sedimentary type of biogeochemical cycles, the reservoir is

  1. atmosphere

  2. water

  3. earth's crust

  4. living organisms
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

For the sedimentary type of biogeochemical cycles, the reservoir is earth's crust as the nutrients do not take any gaseous form rather they are either mineralized of immobilized but ultimately return to earth's crust by decomposition, leaching etc.

So, the correct answer is option C, earth's crust.

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

Biogeochemical cycles can be traced in 

  1. Ecosystems

  2. Biomes

  3. Only water

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The inorganic nutrients cycle though more than the organisms, however, they also enter into the atmosphere, the oceans and even rocks. Since these chemicals cycle through both the biological and the geological world, we call the overall cycles biogeochemical cycles. 

Each chemical has its own unique cycle, but all of the cycles do have some things in common. Reservoirs are those parts of the cycle where the chemical is held in large quantities for long periods of time. In exchange pools, on the other hand, the chemical is held for only a short period of time. The length of time a chemical is held in an exchange pool or a reservoir is termed its residence time. 

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

Biogeochemical cycling means cycling of 

  1. Energy in an ecosystem

  2. Gases between plants and the atmosphere

  3. Nutrients in an ecosystem

  4. Water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Biogeochemical cycles are nutrient cycles. These are the cycles which are responsible for the recycling the nutrients which are present in the geosphere and atmosphere. The nutrient recycling takes place in the ecosystem and biomes. The recycling of nutrients helps in maintaining the nutrients in the available form for the uptake by the organisms.

Thus, the correct answer is option C.  

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

The path through which nutrients are passed from one acceptor to the other is called _______.

  1. Biogeochemical cycle

  2. Biochemical cycle

  3. Chemical cycle

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The path through which a nutrient travels as it moves from the air, water or soil into the bodies of living organisms and back to the air, water or soil is called a biogeochemical cycle. It is required to maintain the nutrient level in the ecosystem.

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

Source of maximum sulphur is/reservoir of sulphur is

  1. Ocean

  2. Lakes

  3. Land

  4. Rocks
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Source of maximum sulfur is/reservoir of sulfur is rocks. It is found in the form of iron pyrites, evaporite rocks in the form of anhydrite and baryte and calcium and magnesium carbonates.

Thus, the correct answer is 'Rocks.'