Find out correct statements - (A)Mammals, amphibia, freshwater fishes are ureotelic.
(B) Waste product of bird and insect is same.
(C) Fish eliminate ammonia through gill surfaces as `NH_(4)^(+)`
(D) Uric acid is most toxic form and requires large amount of water for its elimination.
(E) Excretory structures of most insects are malpighian tubules.
Find out correct statements - (A)Mammals, amphibia, freshwater fishes are ureotelic.
(B) Waste product of bird and insect is same.
(C) Fish eliminate ammonia through gill surfaces as `NH_(4)^(+)`
(D) Uric acid is most toxic form and requires large amount of water for its elimination.
(E) Excretory structures of most insects are malpighian tubules.
(B) Waste product of bird and insect is same.
(C) Fish eliminate ammonia through gill surfaces as `NH_(4)^(+)`
(D) Uric acid is most toxic form and requires large amount of water for its elimination.
(E) Excretory structures of most insects are malpighian tubules.
A
A, B, E
B
A, B, C, E
C
B, C, E
D
All statement are correct
Text Solution
AI Generated Solution
The correct Answer is:
To determine which statements are correct, we will analyze each statement one by one.
### Step-by-Step Solution:
1. **Statement A**: "Mammals, amphibia, freshwater fishes are ureotelic."
- **Analysis**: This statement is correct. Ureotelic organisms excrete urea as their primary nitrogenous waste. Mammals, amphibians, and freshwater fishes fall into this category.
- **Conclusion**: True
2. **Statement B**: "Waste product of bird and insect is same."
- **Analysis**: This statement is also correct. Both birds and insects primarily excrete uric acid as their nitrogenous waste, which is less toxic and conserves water.
- **Conclusion**: True
3. **Statement C**: "Fish eliminate ammonia through gill surfaces as `NH4+`."
- **Analysis**: This statement is correct. Many bony fishes excrete ammonia directly into the water through their gills, often in the form of ammonium ions (NH4+).
- **Conclusion**: True
4. **Statement D**: "Uric acid is most toxic form and requires large amount of water for its elimination."
- **Analysis**: This statement is incorrect. Uric acid is actually less toxic than ammonia and requires less water for its elimination. Ammonia is the most toxic nitrogenous waste and requires a large amount of water to be safely excreted.
- **Conclusion**: False
5. **Statement E**: "Excretory structures of most insects are malpighian tubules."
- **Analysis**: This statement is correct. Most insects do have Malpighian tubules, which are responsible for excreting nitrogenous wastes.
- **Conclusion**: True
### Final Summary of Correct Statements:
The correct statements are A, B, C, and E.
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Assertion :- Mostly aquatic animals are ammonotelic. Reason :- Ammonia is the most toxic form and requires large amount of water for its elimination.
Choose the correct statements A) Uric acid is converted into allantoin by the action of uricase enzyme, in humans B) Most of the ammonia is lost as ammonium ions across the epithelium of gills, in bony fishes C) Trimethylamine oxide protects body proteins from the damaging effect of uric acid in cartilaginous fishes
Knowledge Check
A Necessary Resource for Science In the winter of 1968, scientists David Schindler and Gregg Brunskill poured nitrates and phosphates into Lake 1 ul"227, this is one" of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area. Schindler and Brunskill were contaminating the water not out of malice but in the name of research. While deliberately adding chemical compounds to a lake may seem 2 ul"destructive and irresponsible, this method" of experimenting is sometimes the most effective way to influence policy and save the environment from even more damaging pollution. Schindler and Brunskill were investigating possible causes for the large blooms of blue-green algae, or cyanobacteria, that had been affecting bodies of water such as Lake Erie. 3 ul"In addition to being unsightly and odorous, these algal blooms cause oxygen depletion. Oxygen depletion kills fish and other wildlife in the lakes." Just weeks after the scientists added the nitrates and phosphates, the water in Lake 227 turned bright 4 ul"green. It was thick with :" the same type of algal blooms that had plagued Lake Erie. 5 ul"One mission of the Experimental Lakes Area is to conduct research that helps people better understand threats to the environment." The scientists divided the lake in half by placing a nylon barrier through the narrowest part of its figure-eight shape. In one half of Lake 226, they added phosphates, nitrates, and a source of carbon, in the other, they added just nitrates 6 ul"and a source of carbon was added." Schindler and Brunskill hypothesized that phosphates were responsible for the growth of cyanobacteria. The experiment confirmed their suspicions when the half of the lake containing the phosphates 7 ul"was teeming" with blue-green algae. Schindler and Brunskill’s findings were 8 ul"shown off by" the journal Science. The research demonstrated a clear correlation between introducing phosphates and the growth of blue-green algae. 9 ul"For example," legislators in Canada passed laws banning phosphates in laundry detergents, which had been entering the water supply. 10 Experiments like these can help people understand the unintended consequences of using certain household products. 11 ul"Of course, regulating the use of certain chemical compounds can be a controversial issue" . Selectively establishing remote study locations, such as the Experimental Lakes Area, can provide scientists with opportunities to safely conduct controlled research. This research can generate evidence solid enough to persuade policy makers to take action in favor of protecting the larger environment. Which choice most effectively combines the underlined sentences?
A Necessary Resource for Science In the winter of 1968, scientists David Schindler and Gregg Brunskill poured nitrates and phosphates into Lake 1 ul"227, this is one" of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area. Schindler and Brunskill were contaminating the water not out of malice but in the name of research. While deliberately adding chemical compounds to a lake may seem 2 ul"destructive and irresponsible, this method" of experimenting is sometimes the most effective way to influence policy and save the environment from even more damaging pollution. Schindler and Brunskill were investigating possible causes for the large blooms of blue-green algae, or cyanobacteria, that had been affecting bodies of water such as Lake Erie. 3 ul"In addition to being unsightly and odorous, these algal blooms cause oxygen depletion. Oxygen depletion kills fish and other wildlife in the lakes." Just weeks after the scientists added the nitrates and phosphates, the water in Lake 227 turned bright 4 ul"green. It was thick with :" the same type of algal blooms that had plagued Lake Erie. 5 ul"One mission of the Experimental Lakes Area is to conduct research that helps people better understand threats to the environment." The scientists divided the lake in half by placing a nylon barrier through the narrowest part of its figure-eight shape. In one half of Lake 226, they added phosphates, nitrates, and a source of carbon, in the other, they added just nitrates 6 ul"and a source of carbon was added." Schindler and Brunskill hypothesized that phosphates were responsible for the growth of cyanobacteria. The experiment confirmed their suspicions when the half of the lake containing the phosphates 7 ul"was teeming" with blue-green algae. Schindler and Brunskill’s findings were 8 ul"shown off by" the journal Science. The research demonstrated a clear correlation between introducing phosphates and the growth of blue-green algae. 9 ul"For example," legislators in Canada passed laws banning phosphates in laundry detergents, which had been entering the water supply. 10 Experiments like these can help people understand the unintended consequences of using certain household products. 11 ul"Of course, regulating the use of certain chemical compounds can be a controversial issue" . Selectively establishing remote study locations, such as the Experimental Lakes Area, can provide scientists with opportunities to safely conduct controlled research. This research can generate evidence solid enough to persuade policy makers to take action in favor of protecting the larger environment. Which choice most effectively combines the underlined sentences?
A
In addition to being unsightly and odorous, these algal blooms cause oxygen depletion: the result being that it kills fish and other wildlife in the lakes.
B
In addition to being unsightly and odorous, these algal blooms cause oxygen depletion, the algal blooms cause oxygen depletion that kills fish and other wildlife in the lakes.
C
In addition to being unsightly and odorous, these algal blooms cause oxygen depletion, and oxygen depletion caused by the algal blooms kills fish and other wildlife in the lakes.
D
In addition to being unsightly and odorous, these algal blooms cause oxygen depletion, which kills fish and other wildlife in the lakes
A Necessary Resource for Science In the winter of 1968, scientists David Schindler and Gregg Brunskill poured nitrates and phosphates into Lake 1 ul"227, this is one" of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area. Schindler and Brunskill were contaminating the water not out of malice but in the name of research. While deliberately adding chemical compounds to a lake may seem 2 ul"destructive and irresponsible, this method" of experimenting is sometimes the most effective way to influence policy and save the environment from even more damaging pollution. Schindler and Brunskill were investigating possible causes for the large blooms of blue-green algae, or cyanobacteria, that had been affecting bodies of water such as Lake Erie. 3 ul"In addition to being unsightly and odorous, these algal blooms cause oxygen depletion. Oxygen depletion kills fish and other wildlife in the lakes." Just weeks after the scientists added the nitrates and phosphates, the water in Lake 227 turned bright 4 ul"green. It was thick with :" the same type of algal blooms that had plagued Lake Erie. 5 ul"One mission of the Experimental Lakes Area is to conduct research that helps people better understand threats to the environment." The scientists divided the lake in half by placing a nylon barrier through the narrowest part of its figure-eight shape. In one half of Lake 226, they added phosphates, nitrates, and a source of carbon, in the other, they added just nitrates 6 ul"and a source of carbon was added." Schindler and Brunskill hypothesized that phosphates were responsible for the growth of cyanobacteria. The experiment confirmed their suspicions when the half of the lake containing the phosphates 7 ul"was teeming" with blue-green algae. Schindler and Brunskill’s findings were 8 ul"shown off by" the journal Science. The research demonstrated a clear correlation between introducing phosphates and the growth of blue-green algae. 9 ul"For example," legislators in Canada passed laws banning phosphates in laundry detergents, which had been entering the water supply. 10 Experiments like these can help people understand the unintended consequences of using certain household products. 11 ul"Of course, regulating the use of certain chemical compounds can be a controversial issue" . Selectively establishing remote study locations, such as the Experimental Lakes Area, can provide scientists with opportunities to safely conduct controlled research. This research can generate evidence solid enough to persuade policy makers to take action in favor of protecting the larger environment. Which choice most effectively anticipates and addresses a relevant counterargument to the argument in favor of the types of experiments described in the passage?
A Necessary Resource for Science In the winter of 1968, scientists David Schindler and Gregg Brunskill poured nitrates and phosphates into Lake 1 ul"227, this is one" of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area. Schindler and Brunskill were contaminating the water not out of malice but in the name of research. While deliberately adding chemical compounds to a lake may seem 2 ul"destructive and irresponsible, this method" of experimenting is sometimes the most effective way to influence policy and save the environment from even more damaging pollution. Schindler and Brunskill were investigating possible causes for the large blooms of blue-green algae, or cyanobacteria, that had been affecting bodies of water such as Lake Erie. 3 ul"In addition to being unsightly and odorous, these algal blooms cause oxygen depletion. Oxygen depletion kills fish and other wildlife in the lakes." Just weeks after the scientists added the nitrates and phosphates, the water in Lake 227 turned bright 4 ul"green. It was thick with :" the same type of algal blooms that had plagued Lake Erie. 5 ul"One mission of the Experimental Lakes Area is to conduct research that helps people better understand threats to the environment." The scientists divided the lake in half by placing a nylon barrier through the narrowest part of its figure-eight shape. In one half of Lake 226, they added phosphates, nitrates, and a source of carbon, in the other, they added just nitrates 6 ul"and a source of carbon was added." Schindler and Brunskill hypothesized that phosphates were responsible for the growth of cyanobacteria. The experiment confirmed their suspicions when the half of the lake containing the phosphates 7 ul"was teeming" with blue-green algae. Schindler and Brunskill’s findings were 8 ul"shown off by" the journal Science. The research demonstrated a clear correlation between introducing phosphates and the growth of blue-green algae. 9 ul"For example," legislators in Canada passed laws banning phosphates in laundry detergents, which had been entering the water supply. 10 Experiments like these can help people understand the unintended consequences of using certain household products. 11 ul"Of course, regulating the use of certain chemical compounds can be a controversial issue" . Selectively establishing remote study locations, such as the Experimental Lakes Area, can provide scientists with opportunities to safely conduct controlled research. This research can generate evidence solid enough to persuade policy makers to take action in favor of protecting the larger environment. Which choice most effectively anticipates and addresses a relevant counterargument to the argument in favor of the types of experiments described in the passage?
A
NO CHANGE
B
Many companies now offer phosphate-free alternatives for household cleaning products.
C
Obviously, scientists should not be allowed to randomly perform experiments on just any body of water.
D
Phosphates are sometimes used in agricultural fertilizers, in addition to being used in cleaning products.
A Necessary Resource for Science In the winter of 1968, scientists David Schindler and Gregg Brunskill poured nitrates and phosphates into Lake 1 ul"227, this is one" of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area. Schindler and Brunskill were contaminating the water not out of malice but in the name of research. While deliberately adding chemical compounds to a lake may seem 2 ul"destructive and irresponsible, this method" of experimenting is sometimes the most effective way to influence policy and save the environment from even more damaging pollution. Schindler and Brunskill were investigating possible causes for the large blooms of blue-green algae, or cyanobacteria, that had been affecting bodies of water such as Lake Erie. 3 ul"In addition to being unsightly and odorous, these algal blooms cause oxygen depletion. Oxygen depletion kills fish and other wildlife in the lakes." Just weeks after the scientists added the nitrates and phosphates, the water in Lake 227 turned bright 4 ul"green. It was thick with :" the same type of algal blooms that had plagued Lake Erie. 5 ul"One mission of the Experimental Lakes Area is to conduct research that helps people better understand threats to the environment." The scientists divided the lake in half by placing a nylon barrier through the narrowest part of its figure-eight shape. In one half of Lake 226, they added phosphates, nitrates, and a source of carbon, in the other, they added just nitrates 6 ul"and a source of carbon was added." Schindler and Brunskill hypothesized that phosphates were responsible for the growth of cyanobacteria. The experiment confirmed their suspicions when the half of the lake containing the phosphates 7 ul"was teeming" with blue-green algae. Schindler and Brunskill’s findings were 8 ul"shown off by" the journal Science. The research demonstrated a clear correlation between introducing phosphates and the growth of blue-green algae. 9 ul"For example," legislators in Canada passed laws banning phosphates in laundry detergents, which had been entering the water supply. 10 Experiments like these can help people understand the unintended consequences of using certain household products. 11 ul"Of course, regulating the use of certain chemical compounds can be a controversial issue" . Selectively establishing remote study locations, such as the Experimental Lakes Area, can provide scientists with opportunities to safely conduct controlled research. This research can generate evidence solid enough to persuade policy makers to take action in favor of protecting the larger environment. At this point, the writer wants to add a second policy outcome of the research described. Which choice best accomplishes this goal?
A Necessary Resource for Science In the winter of 1968, scientists David Schindler and Gregg Brunskill poured nitrates and phosphates into Lake 1 ul"227, this is one" of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area. Schindler and Brunskill were contaminating the water not out of malice but in the name of research. While deliberately adding chemical compounds to a lake may seem 2 ul"destructive and irresponsible, this method" of experimenting is sometimes the most effective way to influence policy and save the environment from even more damaging pollution. Schindler and Brunskill were investigating possible causes for the large blooms of blue-green algae, or cyanobacteria, that had been affecting bodies of water such as Lake Erie. 3 ul"In addition to being unsightly and odorous, these algal blooms cause oxygen depletion. Oxygen depletion kills fish and other wildlife in the lakes." Just weeks after the scientists added the nitrates and phosphates, the water in Lake 227 turned bright 4 ul"green. It was thick with :" the same type of algal blooms that had plagued Lake Erie. 5 ul"One mission of the Experimental Lakes Area is to conduct research that helps people better understand threats to the environment." The scientists divided the lake in half by placing a nylon barrier through the narrowest part of its figure-eight shape. In one half of Lake 226, they added phosphates, nitrates, and a source of carbon, in the other, they added just nitrates 6 ul"and a source of carbon was added." Schindler and Brunskill hypothesized that phosphates were responsible for the growth of cyanobacteria. The experiment confirmed their suspicions when the half of the lake containing the phosphates 7 ul"was teeming" with blue-green algae. Schindler and Brunskill’s findings were 8 ul"shown off by" the journal Science. The research demonstrated a clear correlation between introducing phosphates and the growth of blue-green algae. 9 ul"For example," legislators in Canada passed laws banning phosphates in laundry detergents, which had been entering the water supply. 10 Experiments like these can help people understand the unintended consequences of using certain household products. 11 ul"Of course, regulating the use of certain chemical compounds can be a controversial issue" . Selectively establishing remote study locations, such as the Experimental Lakes Area, can provide scientists with opportunities to safely conduct controlled research. This research can generate evidence solid enough to persuade policy makers to take action in favor of protecting the larger environment. At this point, the writer wants to add a second policy outcome of the research described. Which choice best accomplishes this goal?
A
Lake 226 continued to develop blooms of blue-green algae for eight consecutive years after the experiment took place
B
In the United States, many individual states have also adopted legislation to eliminate, or at least reduce, phosphorous content in laundry detergents.
C
In 1974, Schindler initiated a study of the effects of acid rain, using Lake 223 to examine how sulfuric acid altered aquatic ecosystems.
D
Aerial photos of the lakes taken before and during algal blooms helped convey the effects of phosphates in water to the public.
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A Necessary Resource for Science In the winter of 1968, scientists David Schindler and Gregg Brunskill poured nitrates and phosphates into Lake 1 ul"227, this is one" of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area. Schindler and Brunskill were contaminating the water not out of malice but in the name of research. While deliberately adding chemical compounds to a lake may seem 2 ul"destructive and irresponsible, this method" of experimenting is sometimes the most effective way to influence policy and save the environment from even more damaging pollution. Schindler and Brunskill were investigating possible causes for the large blooms of blue-green algae, or cyanobacteria, that had been affecting bodies of water such as Lake Erie. 3 ul"In addition to being unsightly and odorous, these algal blooms cause oxygen depletion. Oxygen depletion kills fish and other wildlife in the lakes." Just weeks after the scientists added the nitrates and phosphates, the water in Lake 227 turned bright 4 ul"green. It was thick with :" the same type of algal blooms that had plagued Lake Erie. 5 ul"One mission of the Experimental Lakes Area is to conduct research that helps people better understand threats to the environment." The scientists divided the lake in half by placing a nylon barrier through the narrowest part of its figure-eight shape. In one half of Lake 226, they added phosphates, nitrates, and a source of carbon, in the other, they added just nitrates 6 ul"and a source of carbon was added." Schindler and Brunskill hypothesized that phosphates were responsible for the growth of cyanobacteria. The experiment confirmed their suspicions when the half of the lake containing the phosphates 7 ul"was teeming" with blue-green algae. Schindler and Brunskill’s findings were 8 ul"shown off by" the journal Science. The research demonstrated a clear correlation between introducing phosphates and the growth of blue-green algae. 9 ul"For example," legislators in Canada passed laws banning phosphates in laundry detergents, which had been entering the water supply. 10 Experiments like these can help people understand the unintended consequences of using certain household products. 11 ul"Of course, regulating the use of certain chemical compounds can be a controversial issue" . Selectively establishing remote study locations, such as the Experimental Lakes Area, can provide scientists with opportunities to safely conduct controlled research. This research can generate evidence solid enough to persuade policy makers to take action in favor of protecting the larger environment.
A Necessary Resource for Science In the winter of 1968, scientists David Schindler and Gregg Brunskill poured nitrates and phosphates into Lake 1 ul"227, this is one" of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area. Schindler and Brunskill were contaminating the water not out of malice but in the name of research. While deliberately adding chemical compounds to a lake may seem 2 ul"destructive and irresponsible, this method" of experimenting is sometimes the most effective way to influence policy and save the environment from even more damaging pollution. Schindler and Brunskill were investigating possible causes for the large blooms of blue-green algae, or cyanobacteria, that had been affecting bodies of water such as Lake Erie. 3 ul"In addition to being unsightly and odorous, these algal blooms cause oxygen depletion. Oxygen depletion kills fish and other wildlife in the lakes." Just weeks after the scientists added the nitrates and phosphates, the water in Lake 227 turned bright 4 ul"green. It was thick with :" the same type of algal blooms that had plagued Lake Erie. 5 ul"One mission of the Experimental Lakes Area is to conduct research that helps people better understand threats to the environment." The scientists divided the lake in half by placing a nylon barrier through the narrowest part of its figure-eight shape. In one half of Lake 226, they added phosphates, nitrates, and a source of carbon, in the other, they added just nitrates 6 ul"and a source of carbon was added." Schindler and Brunskill hypothesized that phosphates were responsible for the growth of cyanobacteria. The experiment confirmed their suspicions when the half of the lake containing the phosphates 7 ul"was teeming" with blue-green algae. Schindler and Brunskill’s findings were 8 ul"shown off by" the journal Science. The research demonstrated a clear correlation between introducing phosphates and the growth of blue-green algae. 9 ul"For example," legislators in Canada passed laws banning phosphates in laundry detergents, which had been entering the water supply. 10 Experiments like these can help people understand the unintended consequences of using certain household products. 11 ul"Of course, regulating the use of certain chemical compounds can be a controversial issue" . Selectively establishing remote study locations, such as the Experimental Lakes Area, can provide scientists with opportunities to safely conduct controlled research. This research can generate evidence solid enough to persuade policy makers to take action in favor of protecting the larger environment.
A Necessary Resource for Science In the winter of 1968, scientists David Schindler and Gregg Brunskill poured nitrates and phosphates into Lake 1 ul"227, this is one" of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area. Schindler and Brunskill were contaminating the water not out of malice but in the name of research. While deliberately adding chemical compounds to a lake may seem 2 ul"destructive and irresponsible, this method" of experimenting is sometimes the most effective way to influence policy and save the environment from even more damaging pollution. Schindler and Brunskill were investigating possible causes for the large blooms of blue-green algae, or cyanobacteria, that had been affecting bodies of water such as Lake Erie. 3 ul"In addition to being unsightly and odorous, these algal blooms cause oxygen depletion. Oxygen depletion kills fish and other wildlife in the lakes." Just weeks after the scientists added the nitrates and phosphates, the water in Lake 227 turned bright 4 ul"green. It was thick with :" the same type of algal blooms that had plagued Lake Erie. 5 ul"One mission of the Experimental Lakes Area is to conduct research that helps people better understand threats to the environment." The scientists divided the lake in half by placing a nylon barrier through the narrowest part of its figure-eight shape. In one half of Lake 226, they added phosphates, nitrates, and a source of carbon, in the other, they added just nitrates 6 ul"and a source of carbon was added." Schindler and Brunskill hypothesized that phosphates were responsible for the growth of cyanobacteria. The experiment confirmed their suspicions when the half of the lake containing the phosphates 7 ul"was teeming" with blue-green algae. Schindler and Brunskill’s findings were 8 ul"shown off by" the journal Science. The research demonstrated a clear correlation between introducing phosphates and the growth of blue-green algae. 9 ul"For example," legislators in Canada passed laws banning phosphates in laundry detergents, which had been entering the water supply. 10 Experiments like these can help people understand the unintended consequences of using certain household products. 11 ul"Of course, regulating the use of certain chemical compounds can be a controversial issue" . Selectively establishing remote study locations, such as the Experimental Lakes Area, can provide scientists with opportunities to safely conduct controlled research. This research can generate evidence solid enough to persuade policy makers to take action in favor of protecting the larger environment.
ALLEN-EXCRETORY PRODUCTS AND THEIR ELIMINATION-S
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- which one is both osmoregulator as well as nitrogenous products
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- Select the true statement -
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- Which of the following statement is not true about nephrons ?
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- The urine is :-
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