260339
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D) Identify the blanks Options :
1 A = Rock minerals; B = Detritus; C = Litter fall; D = Producers
2 A = Litter fall; B = Producers; C = Rock minerals; D = Detritus
3 A = Detritus; B = Rock minerals; C = Producer; D = Litter fall
4 A = Producers; B = Litter fall; C = Rock minerals; D = Detritus
Explanation:
Phosphorus is a major constituent of the biological membrane, nucleic acids and cellular energy transfer system. - Detritus is leaf litter and other organic matter intermixed with soil, which is referred to as humus. Rocks are composed of one or more minerals.
AIPMT-2014
Ecosystem
260345
Study the model of phosphorus cycle (I) Rock Minerals (II) Producers (III) Detritus (IV) Soil solution (V) Consumers Identify the $A, B, C, D$ and $E$ Options :
1 A-IV B-V C-III D-II E-I
2 A-II B-IV C-I D-V E-III
3 A-II B-V C-III D-IV E-I
4 A-III B-V C-I D-II E-IV
Explanation:
Fig- A Simplyfied model of phosphorus cycle in a terrestrial ecosystem. Phasphorus is a major constituent of biological membranes, nucleic acids and cellular energy transfer system. Many animals also need large auantities of this element to make shells, bones \& teeth. The natural reservoirs of phosphorus is rock, which contains phosphorus in the form of phosphates. When rock are weathered, minute amounts of these phosphates dissolue in soil solution and are absorbed by the roots of the plants. Herbivores and other animals obtain this element from plants. The waste products and the dead organisms are decomposed by phosphate solubilising bacteria releasing phosphorus - solubilising bacteria releasing phosphorus.
AP EAMCET-28.04.2017 Shift-I
Ecosystem
260347
Assertion (A): The eutrophication of water is attributed to nitrates and phosphates Reason (R): They are the chief plant nutrients Options:
1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ correct and $\mathrm{R}$ is not the correct explanation of $\mathrm{A}$
3 $\mathrm{A}$ is correct but $\mathrm{R}$ is wrong
4 $A$ is wrong but $R$ is correct
Explanation:
Eutrophication is a process where by water bodies receive excessive amounts of nutrients, which results in excessive plant growth (like algal bloom). Mainly aries from the oversupply of phosphate and nitrate nutrients. The nitrogen and phosphorus are often limiting factors in plant growth. Therefore they are used in fertilizers to improve plant growth. Thus the option (b) - A \& R are correct but $\mathrm{R}$ is not correct explanation of $\mathrm{A}$.
AP EAPCET-07.09.2021 Shift-I
Ecosystem
260357
Nitrogen fixing bacteria converts
1 $\mathrm{N}_2 \rightarrow \mathrm{NH}_3$
2 $\mathrm{NH}_4^{+} \rightarrow$ Nitrates
3 $\mathrm{NO}_2 \rightarrow \mathrm{NO}_3$
4 $\mathrm{NO}_3 \rightarrow \mathrm{N}_2$
Explanation:
Nitrogen-fixing bacteria in the soil and within the root nodules of some plants converts Nitrogen gas in the atmosphere to ammonia - They have a multisubunit enzyme complex, nitrogenase, which catalyses the reduction of nitrogen to ammonia. - The oxidation of ammonia to nitrate and finally to nitrate is called nitrification.
AIPMT-1999
Ecosystem
260332
The role of bacteria in carbon cycle is:
1 photosynthesis
2 chemosynthesis
3 decomposition of organic compounds
4 evolution of $\mathrm{O}_2$
Explanation:
The carbon cycle is a complex cyclical process through Which all of the carbon atoms in existence rotate. Carbon cycling occurs through Atmosphere Ocean \& through living and dead organisms. Bacteria also play an important role in carbon cycle involves decomposition or breakdown of the waste organic compound because decomposers contribute substantially to $\mathrm{CO} 2$ pool by their processing of waste materials \& dead organic matter of land or ocean.
260339
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D) Identify the blanks Options :
1 A = Rock minerals; B = Detritus; C = Litter fall; D = Producers
2 A = Litter fall; B = Producers; C = Rock minerals; D = Detritus
3 A = Detritus; B = Rock minerals; C = Producer; D = Litter fall
4 A = Producers; B = Litter fall; C = Rock minerals; D = Detritus
Explanation:
Phosphorus is a major constituent of the biological membrane, nucleic acids and cellular energy transfer system. - Detritus is leaf litter and other organic matter intermixed with soil, which is referred to as humus. Rocks are composed of one or more minerals.
AIPMT-2014
Ecosystem
260345
Study the model of phosphorus cycle (I) Rock Minerals (II) Producers (III) Detritus (IV) Soil solution (V) Consumers Identify the $A, B, C, D$ and $E$ Options :
1 A-IV B-V C-III D-II E-I
2 A-II B-IV C-I D-V E-III
3 A-II B-V C-III D-IV E-I
4 A-III B-V C-I D-II E-IV
Explanation:
Fig- A Simplyfied model of phosphorus cycle in a terrestrial ecosystem. Phasphorus is a major constituent of biological membranes, nucleic acids and cellular energy transfer system. Many animals also need large auantities of this element to make shells, bones \& teeth. The natural reservoirs of phosphorus is rock, which contains phosphorus in the form of phosphates. When rock are weathered, minute amounts of these phosphates dissolue in soil solution and are absorbed by the roots of the plants. Herbivores and other animals obtain this element from plants. The waste products and the dead organisms are decomposed by phosphate solubilising bacteria releasing phosphorus - solubilising bacteria releasing phosphorus.
AP EAMCET-28.04.2017 Shift-I
Ecosystem
260347
Assertion (A): The eutrophication of water is attributed to nitrates and phosphates Reason (R): They are the chief plant nutrients Options:
1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ correct and $\mathrm{R}$ is not the correct explanation of $\mathrm{A}$
3 $\mathrm{A}$ is correct but $\mathrm{R}$ is wrong
4 $A$ is wrong but $R$ is correct
Explanation:
Eutrophication is a process where by water bodies receive excessive amounts of nutrients, which results in excessive plant growth (like algal bloom). Mainly aries from the oversupply of phosphate and nitrate nutrients. The nitrogen and phosphorus are often limiting factors in plant growth. Therefore they are used in fertilizers to improve plant growth. Thus the option (b) - A \& R are correct but $\mathrm{R}$ is not correct explanation of $\mathrm{A}$.
AP EAPCET-07.09.2021 Shift-I
Ecosystem
260357
Nitrogen fixing bacteria converts
1 $\mathrm{N}_2 \rightarrow \mathrm{NH}_3$
2 $\mathrm{NH}_4^{+} \rightarrow$ Nitrates
3 $\mathrm{NO}_2 \rightarrow \mathrm{NO}_3$
4 $\mathrm{NO}_3 \rightarrow \mathrm{N}_2$
Explanation:
Nitrogen-fixing bacteria in the soil and within the root nodules of some plants converts Nitrogen gas in the atmosphere to ammonia - They have a multisubunit enzyme complex, nitrogenase, which catalyses the reduction of nitrogen to ammonia. - The oxidation of ammonia to nitrate and finally to nitrate is called nitrification.
AIPMT-1999
Ecosystem
260332
The role of bacteria in carbon cycle is:
1 photosynthesis
2 chemosynthesis
3 decomposition of organic compounds
4 evolution of $\mathrm{O}_2$
Explanation:
The carbon cycle is a complex cyclical process through Which all of the carbon atoms in existence rotate. Carbon cycling occurs through Atmosphere Ocean \& through living and dead organisms. Bacteria also play an important role in carbon cycle involves decomposition or breakdown of the waste organic compound because decomposers contribute substantially to $\mathrm{CO} 2$ pool by their processing of waste materials \& dead organic matter of land or ocean.
260339
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D) Identify the blanks Options :
1 A = Rock minerals; B = Detritus; C = Litter fall; D = Producers
2 A = Litter fall; B = Producers; C = Rock minerals; D = Detritus
3 A = Detritus; B = Rock minerals; C = Producer; D = Litter fall
4 A = Producers; B = Litter fall; C = Rock minerals; D = Detritus
Explanation:
Phosphorus is a major constituent of the biological membrane, nucleic acids and cellular energy transfer system. - Detritus is leaf litter and other organic matter intermixed with soil, which is referred to as humus. Rocks are composed of one or more minerals.
AIPMT-2014
Ecosystem
260345
Study the model of phosphorus cycle (I) Rock Minerals (II) Producers (III) Detritus (IV) Soil solution (V) Consumers Identify the $A, B, C, D$ and $E$ Options :
1 A-IV B-V C-III D-II E-I
2 A-II B-IV C-I D-V E-III
3 A-II B-V C-III D-IV E-I
4 A-III B-V C-I D-II E-IV
Explanation:
Fig- A Simplyfied model of phosphorus cycle in a terrestrial ecosystem. Phasphorus is a major constituent of biological membranes, nucleic acids and cellular energy transfer system. Many animals also need large auantities of this element to make shells, bones \& teeth. The natural reservoirs of phosphorus is rock, which contains phosphorus in the form of phosphates. When rock are weathered, minute amounts of these phosphates dissolue in soil solution and are absorbed by the roots of the plants. Herbivores and other animals obtain this element from plants. The waste products and the dead organisms are decomposed by phosphate solubilising bacteria releasing phosphorus - solubilising bacteria releasing phosphorus.
AP EAMCET-28.04.2017 Shift-I
Ecosystem
260347
Assertion (A): The eutrophication of water is attributed to nitrates and phosphates Reason (R): They are the chief plant nutrients Options:
1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ correct and $\mathrm{R}$ is not the correct explanation of $\mathrm{A}$
3 $\mathrm{A}$ is correct but $\mathrm{R}$ is wrong
4 $A$ is wrong but $R$ is correct
Explanation:
Eutrophication is a process where by water bodies receive excessive amounts of nutrients, which results in excessive plant growth (like algal bloom). Mainly aries from the oversupply of phosphate and nitrate nutrients. The nitrogen and phosphorus are often limiting factors in plant growth. Therefore they are used in fertilizers to improve plant growth. Thus the option (b) - A \& R are correct but $\mathrm{R}$ is not correct explanation of $\mathrm{A}$.
AP EAPCET-07.09.2021 Shift-I
Ecosystem
260357
Nitrogen fixing bacteria converts
1 $\mathrm{N}_2 \rightarrow \mathrm{NH}_3$
2 $\mathrm{NH}_4^{+} \rightarrow$ Nitrates
3 $\mathrm{NO}_2 \rightarrow \mathrm{NO}_3$
4 $\mathrm{NO}_3 \rightarrow \mathrm{N}_2$
Explanation:
Nitrogen-fixing bacteria in the soil and within the root nodules of some plants converts Nitrogen gas in the atmosphere to ammonia - They have a multisubunit enzyme complex, nitrogenase, which catalyses the reduction of nitrogen to ammonia. - The oxidation of ammonia to nitrate and finally to nitrate is called nitrification.
AIPMT-1999
Ecosystem
260332
The role of bacteria in carbon cycle is:
1 photosynthesis
2 chemosynthesis
3 decomposition of organic compounds
4 evolution of $\mathrm{O}_2$
Explanation:
The carbon cycle is a complex cyclical process through Which all of the carbon atoms in existence rotate. Carbon cycling occurs through Atmosphere Ocean \& through living and dead organisms. Bacteria also play an important role in carbon cycle involves decomposition or breakdown of the waste organic compound because decomposers contribute substantially to $\mathrm{CO} 2$ pool by their processing of waste materials \& dead organic matter of land or ocean.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Ecosystem
260339
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D) Identify the blanks Options :
1 A = Rock minerals; B = Detritus; C = Litter fall; D = Producers
2 A = Litter fall; B = Producers; C = Rock minerals; D = Detritus
3 A = Detritus; B = Rock minerals; C = Producer; D = Litter fall
4 A = Producers; B = Litter fall; C = Rock minerals; D = Detritus
Explanation:
Phosphorus is a major constituent of the biological membrane, nucleic acids and cellular energy transfer system. - Detritus is leaf litter and other organic matter intermixed with soil, which is referred to as humus. Rocks are composed of one or more minerals.
AIPMT-2014
Ecosystem
260345
Study the model of phosphorus cycle (I) Rock Minerals (II) Producers (III) Detritus (IV) Soil solution (V) Consumers Identify the $A, B, C, D$ and $E$ Options :
1 A-IV B-V C-III D-II E-I
2 A-II B-IV C-I D-V E-III
3 A-II B-V C-III D-IV E-I
4 A-III B-V C-I D-II E-IV
Explanation:
Fig- A Simplyfied model of phosphorus cycle in a terrestrial ecosystem. Phasphorus is a major constituent of biological membranes, nucleic acids and cellular energy transfer system. Many animals also need large auantities of this element to make shells, bones \& teeth. The natural reservoirs of phosphorus is rock, which contains phosphorus in the form of phosphates. When rock are weathered, minute amounts of these phosphates dissolue in soil solution and are absorbed by the roots of the plants. Herbivores and other animals obtain this element from plants. The waste products and the dead organisms are decomposed by phosphate solubilising bacteria releasing phosphorus - solubilising bacteria releasing phosphorus.
AP EAMCET-28.04.2017 Shift-I
Ecosystem
260347
Assertion (A): The eutrophication of water is attributed to nitrates and phosphates Reason (R): They are the chief plant nutrients Options:
1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ correct and $\mathrm{R}$ is not the correct explanation of $\mathrm{A}$
3 $\mathrm{A}$ is correct but $\mathrm{R}$ is wrong
4 $A$ is wrong but $R$ is correct
Explanation:
Eutrophication is a process where by water bodies receive excessive amounts of nutrients, which results in excessive plant growth (like algal bloom). Mainly aries from the oversupply of phosphate and nitrate nutrients. The nitrogen and phosphorus are often limiting factors in plant growth. Therefore they are used in fertilizers to improve plant growth. Thus the option (b) - A \& R are correct but $\mathrm{R}$ is not correct explanation of $\mathrm{A}$.
AP EAPCET-07.09.2021 Shift-I
Ecosystem
260357
Nitrogen fixing bacteria converts
1 $\mathrm{N}_2 \rightarrow \mathrm{NH}_3$
2 $\mathrm{NH}_4^{+} \rightarrow$ Nitrates
3 $\mathrm{NO}_2 \rightarrow \mathrm{NO}_3$
4 $\mathrm{NO}_3 \rightarrow \mathrm{N}_2$
Explanation:
Nitrogen-fixing bacteria in the soil and within the root nodules of some plants converts Nitrogen gas in the atmosphere to ammonia - They have a multisubunit enzyme complex, nitrogenase, which catalyses the reduction of nitrogen to ammonia. - The oxidation of ammonia to nitrate and finally to nitrate is called nitrification.
AIPMT-1999
Ecosystem
260332
The role of bacteria in carbon cycle is:
1 photosynthesis
2 chemosynthesis
3 decomposition of organic compounds
4 evolution of $\mathrm{O}_2$
Explanation:
The carbon cycle is a complex cyclical process through Which all of the carbon atoms in existence rotate. Carbon cycling occurs through Atmosphere Ocean \& through living and dead organisms. Bacteria also play an important role in carbon cycle involves decomposition or breakdown of the waste organic compound because decomposers contribute substantially to $\mathrm{CO} 2$ pool by their processing of waste materials \& dead organic matter of land or ocean.
260339
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D) Identify the blanks Options :
1 A = Rock minerals; B = Detritus; C = Litter fall; D = Producers
2 A = Litter fall; B = Producers; C = Rock minerals; D = Detritus
3 A = Detritus; B = Rock minerals; C = Producer; D = Litter fall
4 A = Producers; B = Litter fall; C = Rock minerals; D = Detritus
Explanation:
Phosphorus is a major constituent of the biological membrane, nucleic acids and cellular energy transfer system. - Detritus is leaf litter and other organic matter intermixed with soil, which is referred to as humus. Rocks are composed of one or more minerals.
AIPMT-2014
Ecosystem
260345
Study the model of phosphorus cycle (I) Rock Minerals (II) Producers (III) Detritus (IV) Soil solution (V) Consumers Identify the $A, B, C, D$ and $E$ Options :
1 A-IV B-V C-III D-II E-I
2 A-II B-IV C-I D-V E-III
3 A-II B-V C-III D-IV E-I
4 A-III B-V C-I D-II E-IV
Explanation:
Fig- A Simplyfied model of phosphorus cycle in a terrestrial ecosystem. Phasphorus is a major constituent of biological membranes, nucleic acids and cellular energy transfer system. Many animals also need large auantities of this element to make shells, bones \& teeth. The natural reservoirs of phosphorus is rock, which contains phosphorus in the form of phosphates. When rock are weathered, minute amounts of these phosphates dissolue in soil solution and are absorbed by the roots of the plants. Herbivores and other animals obtain this element from plants. The waste products and the dead organisms are decomposed by phosphate solubilising bacteria releasing phosphorus - solubilising bacteria releasing phosphorus.
AP EAMCET-28.04.2017 Shift-I
Ecosystem
260347
Assertion (A): The eutrophication of water is attributed to nitrates and phosphates Reason (R): They are the chief plant nutrients Options:
1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ correct and $\mathrm{R}$ is not the correct explanation of $\mathrm{A}$
3 $\mathrm{A}$ is correct but $\mathrm{R}$ is wrong
4 $A$ is wrong but $R$ is correct
Explanation:
Eutrophication is a process where by water bodies receive excessive amounts of nutrients, which results in excessive plant growth (like algal bloom). Mainly aries from the oversupply of phosphate and nitrate nutrients. The nitrogen and phosphorus are often limiting factors in plant growth. Therefore they are used in fertilizers to improve plant growth. Thus the option (b) - A \& R are correct but $\mathrm{R}$ is not correct explanation of $\mathrm{A}$.
AP EAPCET-07.09.2021 Shift-I
Ecosystem
260357
Nitrogen fixing bacteria converts
1 $\mathrm{N}_2 \rightarrow \mathrm{NH}_3$
2 $\mathrm{NH}_4^{+} \rightarrow$ Nitrates
3 $\mathrm{NO}_2 \rightarrow \mathrm{NO}_3$
4 $\mathrm{NO}_3 \rightarrow \mathrm{N}_2$
Explanation:
Nitrogen-fixing bacteria in the soil and within the root nodules of some plants converts Nitrogen gas in the atmosphere to ammonia - They have a multisubunit enzyme complex, nitrogenase, which catalyses the reduction of nitrogen to ammonia. - The oxidation of ammonia to nitrate and finally to nitrate is called nitrification.
AIPMT-1999
Ecosystem
260332
The role of bacteria in carbon cycle is:
1 photosynthesis
2 chemosynthesis
3 decomposition of organic compounds
4 evolution of $\mathrm{O}_2$
Explanation:
The carbon cycle is a complex cyclical process through Which all of the carbon atoms in existence rotate. Carbon cycling occurs through Atmosphere Ocean \& through living and dead organisms. Bacteria also play an important role in carbon cycle involves decomposition or breakdown of the waste organic compound because decomposers contribute substantially to $\mathrm{CO} 2$ pool by their processing of waste materials \& dead organic matter of land or ocean.
