Nutrient cycles - class-IX
Description: nutrient cycles | |
Number of Questions: 52 | |
Created by: | |
Tags: option c: ecology and conservation botany environmental science ecology organisms and their environment biology ecosystem biogeochemical cycles ecosystems energy flow in an ecosystem |
Which one of the following is not one of the three aspects studied in biogeochemical cycling?
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The nature and size of natural reservoir
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The rate of movement between reservoirs
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Interaction between different biogeochemical cycles
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Creation of their own biogeochemical cycles by new species
The reservoir for the gaseous type of biogeochemical cycle exists in.
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Stratosphere
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Atmosphere
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Ionosphere
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Lithosphere
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?
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Nitrogen cycle
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Krebs cycle
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Electron cycle
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All of the above
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
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Atmosphere
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Hydrosphere
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Both (A) and (B)
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Lithosphere
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
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Cycling of energy
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Cycling of gases
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Cycling of nutrients
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Cycling of water
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.
Cycling of elements in an ecosystem is called as
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Chemical cycle
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Geochemical cycle
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Biogeochemical cycle
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Geological cycle
Which of the following cycle would be affected if decomposers of an ecosystem vanish?
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Producer's cycle
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Consumer's cycle
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Decomposer's cycle
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Biogeochemical cycle
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
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Phosphorus and carbon dioxide
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Oxygen and nitrogen
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Phosphorus and nitrogen
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Phosphorus and sulphur
If all decomposers are removed from an ecosystem, what will happen?
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All consumer will die
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Energy cycle will be inverted
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Balance of biogeochemical cycle will be disturbed
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Only herbivores will die
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.
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Oxygen
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Nitrogen
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Carbon
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Water
Which one of the following is not a gaseous biogeochemical
cycle in ecosystem
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Sulphur cycle
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Phosphorus cycle
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Nitrogen cycle
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Carbon cycle
Cycling of elements in an ecosystem is called
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Chemical cycle
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Geochemical cycle
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Biogeochemical cycle
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Geological cycle
The circulation or cycling of elements in an ecosystem is known as
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Geological cycling
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Geo-chemical cycling
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Bio-geochemical cycling
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Nutrient cycling
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.
In ecosystem, cycling of nutrients is called
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Geological cycle
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Biogeochemical cycle
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Geochemical cycle
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Chemical cycle
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.
____________ is a mixture of 50 - 90% of methane
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Natural gas
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Air
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Water
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Bio diesel
Which chemical is used in air conditions and refrigerators?
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CFCs
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Chlorine
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Fluorine
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Carbon
What is percentage of S, Ca and K?
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2%
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3%
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7%
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8%
Shale Gas is becoming more and more popular in today's Global Gas Exploration Market. Which among the following property of Shale Gas makes it a potential replacement to the conventional Natural gas?
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Its distinct Chemical Property which makes it less polluting.
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Its distinct physical property which makes it easy to store & handle.
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It's cost effective production comparing to the conventional Gas.
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It's availability in huge Reserves.
Cycling of elements in any ecosystem is called as
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Chemical cycle
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Geochemical cycle
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Biogeochemical cycle
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Geological cycle
In earth science, a biogeochemical cycle or substance turn over or cycling of substances is a pathway by which a chemical substance moves through both biotic and abiotic (lithosphere, atmosphere and hydrosphere) compartments of Earth. A cycle is a series of change, which comes back to the starting point and which can be repeated.
The utilization of elements and compounds in nature and their subsequent return to the environment is called
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Life cycles
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Cyclic pathway
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Material cycles
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Recycling
The utilisation of elements and compounds in nature and their subsequent return to the environment is called material cycles. It is also called as a biogeochemical cycle.
In biology, a life cycle is a series of changes in form that an organism undergoes, returning to the starting state.
Recycle is the conversion of waste into useful forms.
Cyclic pathways tend to use the last product they create to re-begin the cycle.
Biogeochemical cycling means cycling of
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Energy in ecosystem
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Gases between plants and the atmosphere
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Nutrients in an ecosystem
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None of the above
Biogeochemical cycle is a pathway by which a chemical substance moves through both biotic and abiotic compartments of earth. The circulation of chemical nutrients like carbon, oxygen, nitrogen, phosphorus, calcium and water, etc., through the biological and physical world are known as biogeochemical cycles. In effect, the element is recycled, although in some cycles there may be places where the element is accumulated or held for a long period of time.
Which one of these is a sedimentary cycle?
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Phosphorous
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Hydrogen
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Oxygen
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Nitrogen
Phosphorus cycle is an example for sedimentary cycle.
The flow of materials from non living components to living components and back to the non living components in a more or less cyclic manner is called as
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Gaseous cycle
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Sedimentary cycle
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Biogeochemical cycle
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Hydrologic cycle
A biogeochemical cycle or inorganic-organic cycle is a circulating or repeatable pathway by which either a chemical element or a molecule moves through both biotic (bio-) and abiotic (geo-) compartments of an ecosystem.
Source of maximum sulphur in reservoir of sulphur is
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Ocean
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Lakes
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Rocks
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Both A and C
The ocean represents a major reservoir of sulphur on earth, with large quantities in the form of dissolved sulphate and sedimentary minerals (e.g., gypsum and pyrite). Sulphate is the most stable form of sulphur on earth; weathering and leaching of rocks and sediments are its main sources to the ocean. The majority of sulphur is found in seawater or sedimentary rocks especially pyrite rich shales and evaporite rocks.
Biogeochemical cycles are also known as
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Cycles of matter
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Sedimentary cycles
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Material cycling
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Gaseous cycles
Biogeochemical cycles may also be referred to as cycles of matter because they link together all organisms and abiotic features on earth. Matter is continually recycled among living and abiotic elements on earth. Biogeochemical cycles facilitate the transfer of matter from one form to another and from one location to another on planet earth.
Biogeochemical cycles can be traced in
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Ecosystems
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Biomes
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Only water
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Both A and B
Biogeochemical cycles are the nutrient cycles. These are the cycles which are responsible for the recycling of the nutrients. The chemical cycles are necessary for the metabolism and maintenance of the organisms in the ecosystem. Biome is a collection of many ecosystems. The nutrient recycling takes place in the ecosystem and biomes.
The natural cycle that circulates elements between the earth and the environment is called as
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Biological cycle
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Chemical cycle
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Biogeochemical cycle
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None of the above
Biogeochemical cycles are the nutrient cycles. These are the cycles which are responsible for the recycling of 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.
Which of the following is a sedimentary cycle?
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Carbon
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Hydrogen
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Nitrogen
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Phosphorus
The abiotic components which are recycled without any involvement of the gaseous form are known as the sedimentary cycle. The element is present in the form of salts as rocks in the geosphere which is taken up by the plants and then transferred to the animals. The phosphate is generally transferred and used in the form of ATP by the living cells.
Plant maintains the balance of ......... in the atmosphere.
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Oxygen
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Carbon dioxide
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Oxygen and Carbon dioxide
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None of these
Photosynthesis is the process in which autotrophs such as green plants use carbon dioxide and water in presence of sunlight to synthesize nutrients such carbohydrates in the form of glucose and release oxygen. Hence oxygen is returned to the atmosphere by photosynthesis. This oxygen from the atmosphere is taken in by animals for carrying out the process of respiration and carbon dioxide is evolved. This carbon dioxide is used by plants and the same cycle continues. Hence plants maintain the balance of oxygen and carbon dioxide in the atmosphere. Thus the correct answer is option C.
An ecosystem, such as an aquarium, is self-sustaining if it involves the interaction between organisms, a flow of energy, and the presence of
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Equal numbers of plants and animals
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More animals than plants
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Materials cycles
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Pioneer organisms
If a ecosystem such as an ecosystem is to be self-sustaining, materials such as oxygen, carbon dioxide, water and nitrogen must be able to recycle between the organisms.
The conversion of $\displaystyle $ is known as
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Denitrification
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Nitrification
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Nitrogen fixation
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Ammonification
Biogeochemical cycles
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Include the processes only conducted by or within living organisms
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Pertain only to the abiotic environment
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Describe the movement of water and other materials throughout the abiotic and biotic environment
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Are used to describe the attempts of humans to recycle various pollutants
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Carbon dioxide
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Nitrogen
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Oxygen
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Water vapour
During the combustion process, oxygen is utilized. As Oxygen is required for the combustion to occur.
Biogeochemical cycle involves .......... factors.
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Biological
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Geological
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Chemical
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All of the above
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.
________ is required to maintain the balance in nature.
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Biotic factors
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Abiotic factors
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Biogeochemical cycle
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None of the above
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 one of the requirements to maintain the balance in nature.
Biogeochemical cycles are of
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Two types
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Three types
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Four types
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Five types
The term biogeochemical cycle is used for exchange or circulation of biogenetic nutrients between living and nonliving components of a biosphere.
Oxygen forms about ............. of the air in the atmosphere.
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20%
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30%
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40%
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45%
If wild animals are killed, what difficulty would we face?
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Imbalance in nature
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Decrease in fog rain
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Decrease in population
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Increase in rain
Which one of the following pairs is a sedimentary type of biogeochemical cycle __________.
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Phosphorus and carbon dioxide
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Oxygen and nitrogen
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phosphorus and nitrogen
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phosphorus and sulphur
In sedimentary cycles of matter, materials involved in circulation between biotic and abiotic components of biosphere are non gaseous and the reservoir pool is lithosphere e.g., phosphorus, calcium, magnesium.
Sulphur has both sedimentary and gaseous phases.
Which of the following cycle would be affected if decomposers of an ecosystem vanish ______________.
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Producer's cycle
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Consumer's cycle
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Decomposer's cycle
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Biogeochemical cycle
Recycling of material is carried out by decomposers. If decomposers of an ecosystem vanish recycling of materials is stopped, thereby affecting the movement materials between the biotic and the abiotic systems that forms the biogeochemical cycle.
Biogeochemical cycles are of _____________.
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Two types
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Three types
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Four types
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Five types
Sedimentary cycle having a small gaseous component is found in
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Phosphorus
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Nitrogen
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Carbon
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Sulphur
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. Sedimentary cycle having a small gaseous component is found in sulphur. Other sedimentary cycles include iron cycle, calcium cycle.
Which of the following occurs in abiotic component of an ecosystem?
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Flow of energy
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Cycling of materials
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Consumers
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Flow of energy and cycling of materials
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.
Which ones are reservoirs of phosphorus and nitrogen cycles respectively?
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Consumers
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Atmosphere and bedrock
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Atmosphere and producers
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Bedrock and atmosphere
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.
For the sedimentary type of biogeochemical cycles, the reservoir is
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Atmosphere
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Water
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Earth's crust
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Living organisms
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.
In which of the following both pairs have correct combination?
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Gaseous nutrient cycle - Carbon and nitrogen
Sedimentatry nutrient cycle - Sulphur and phosphorus -
Gaseous nutrient cycle - Carbon and sulphur
Sedimentary nutrient cycle - Nitrogen and phosphorus -
Gaseous nutrient cycle - Nitrogen and sulphur
Sedimentary nutrient cycle - Carbon and phosphorus -
Gaseous nutrient cycle - Sulphur and phosphorus
Sedimentary nutrient cycle - Carbon and nitrogen
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.
A biogeochemical cycle without an atmospheric component is
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Sulphur
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Nitrogen
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Phosphorus
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Carbon
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.
For sedimentary type of biogeochemical cycles, the reservoir is
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atmosphere
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water
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earth's crust
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living organisms
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.
Biogeochemical cycles can be traced in
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Ecosystems
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Biomes
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Only water
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Both A and B
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.
Biogeochemical cycling means cycling of
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Energy in an ecosystem
-
Gases between plants and the atmosphere
-
Nutrients in an ecosystem
-
Water
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.
The path through which nutrients are passed from one acceptor to the other is called _______.
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Biogeochemical cycle
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Biochemical cycle
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Chemical cycle
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None of the above
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.
Source of maximum sulphur is/reservoir of sulphur is
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Ocean
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Lakes
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Land
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Rocks
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.