You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 5 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0)
Average score
Your score
Categories
Not categorized0%
Your result has been entered into leaderboard
Loading
1
2
3
4
5
Answered
Review
Question 1 of 5
1. Question
2 points
Which of the following countries has signed a Comprehensive Economic Partnership Agreement with India?
Correct
Unlike the UAE, none of the G7 countries has yet signed a bilateral Comprehensive Economic Partnership Agreement (CEPA) with India.
Incorrect
Unlike the UAE, none of the G7 countries has yet signed a bilateral Comprehensive Economic Partnership Agreement (CEPA) with India.
Question 2 of 5
2. Question
2 points
Mosses is a bioindicator. What do you understand by this statement:
1) It reflects changes to ecosystems such as pollution.
2) It cannot be cloned or genetically engineered.
3) It does not contain mRNA.
Select the correct answer code:
Correct
• Solution:
(A)
o Mosses are a common flowerless plant found in all cities especially in damp (humid) or shady locations.
o It generally absorbs water and nutrients from their immediate environments.
o So, according to scientists, delicate mosses found on rocks and trees in cities around the world can be used as low-cost bio indicator to monitor urban pollution and to measure the impact of atmospheric change.
o As a bio indicator, mosses respond to pollution or drought-stress by changing its shape, density or disappearing.
o This characteristicwillallowscientiststocalculateatmosphericalterationsandair pollution.
Incorrect
• Solution:
(A)
o Mosses are a common flowerless plant found in all cities especially in damp (humid) or shady locations.
o It generally absorbs water and nutrients from their immediate environments.
o So, according to scientists, delicate mosses found on rocks and trees in cities around the world can be used as low-cost bio indicator to monitor urban pollution and to measure the impact of atmospheric change.
o As a bio indicator, mosses respond to pollution or drought-stress by changing its shape, density or disappearing.
o This characteristicwillallowscientiststocalculateatmosphericalterationsandair pollution.
Question 3 of 5
3. Question
2 points
Consider the following statements regarding carbon and phosphorus cycle:
1) Atmospheric inputs of phosphorus through rainfall is much higher than carbon inputs.
2) Gaseous exchanges of phosphorus between organism and environment are negligible.
Which of the above statements is/are correct:
Correct
• Solution:
(B)
o Differences between carbon and phosphorus cycle are firstly, atmospheric inputs of phosphorus through rainfall are much smaller than carbon inputs, and, secondly, gaseous exchanges of phosphorus between organism and environment are negligible.
Incorrect
• Solution:
(B)
o Differences between carbon and phosphorus cycle are firstly, atmospheric inputs of phosphorus through rainfall are much smaller than carbon inputs, and, secondly, gaseous exchanges of phosphorus between organism and environment are negligible.
Question 4 of 5
4. Question
2 points
Consider the following statements:
1) Animals need large quantities of Phosphorus to make shells, bones and teeth.
2) The natural reservoir of phosphorus is rock.
3) Like carbon cycle, there is respiratory release of phosphorus into atmosphere.
Which of the above statements is/are correct:
Correct
• Solution:
(C)
o Phosphorus is a major constituent of biological membranes, nucleic acids and cellular energy transfer systems.
o Many animals also need large quantities of this element to make shells, bones and teeth.
o The natural reservoir of phosphorus is rock, which contains phosphorus in the form of phosphates.
o When rocks are weathered, minute amounts of these phosphates dissolve in soil solution and are absorbed by the roots of the plants.
o Herbivores and other animals obtain this element from plants.
o The waste products and the dead organisms are decomposed by phosphate-solubilising bacteria releasing phosphorus.
o Unlike carbon cycle, there is no respiratory release of phosphorus into atmosphere.
Incorrect
• Solution:
(C)
o Phosphorus is a major constituent of biological membranes, nucleic acids and cellular energy transfer systems.
o Many animals also need large quantities of this element to make shells, bones and teeth.
o The natural reservoir of phosphorus is rock, which contains phosphorus in the form of phosphates.
o When rocks are weathered, minute amounts of these phosphates dissolve in soil solution and are absorbed by the roots of the plants.
o Herbivores and other animals obtain this element from plants.
o The waste products and the dead organisms are decomposed by phosphate-solubilising bacteria releasing phosphorus.
o Unlike carbon cycle, there is no respiratory release of phosphorus into atmosphere.
Question 5 of 5
5. Question
2 points
Which of the following adds/add nitrogen to the soil:
1) Burning of coal by man
2) Death of vegetation
3) Excretion of urea by animals
Select the correct answer code:
Correct
• Solution:
(C)
o Burning of coal by man is the main source of atmospheric carbon dioxide.
o It has nothing to do with adding nitrogen to the soil.
o Nitrogenous waste products of living organisms such as urea and dead remain of organisms are converted back into inorganic ammonia by the bacteria.
Incorrect
• Solution:
(C)
o Burning of coal by man is the main source of atmospheric carbon dioxide.
o It has nothing to do with adding nitrogen to the soil.
o Nitrogenous waste products of living organisms such as urea and dead remain of organisms are converted back into inorganic ammonia by the bacteria.
