INSIGHTS STATIC QUIZ 2020 - 21
Quiz-summary
0 of 5 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
Information
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)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- Answered
- Review
-
Question 1 of 5
1. Question
Consider the following statements.
- The energy pyramid of an ecosystem is always upright and narrows to the top.
- The biomass in the upper trophic levels is generally very high as compared to the lower trophic levels.
Which of the above statements is/are correct?
Correct
Solution: a)
Since each higher trophic level receives only a fraction of energy of the lower trophic levels, the energy pyramid is narrow at the top.
But, generally (barring some aquatic ecosystems) lower trophic levels have higher biomass as compared to the higher trophic levels.
Incorrect
Solution: a)
Since each higher trophic level receives only a fraction of energy of the lower trophic levels, the energy pyramid is narrow at the top.
But, generally (barring some aquatic ecosystems) lower trophic levels have higher biomass as compared to the higher trophic levels.
-
Question 2 of 5
2. Question
Consider the following statements regarding Mediterranean Forests.
- Mediterranean Forests are found in only those countries bordering Mediterranean sea.
- They have thick barks and wax coated leaves which help them reduce transpiration.
- Mediterranean Forests are known as ‘Orchards of the world’ for their fruit cultivation.
Which of the above statements is/are correct?
Correct
Solution: c)
Mediterranean forests are found in areas around Mediterranean Sea, Central Chile, South-West USA, Australia, Africa. They have thick barks and wax coated leaves which help them reduce transpiration. Due to these characteristics, Mediterranean trees adapt themselves to dry summers. Mediterranean Forests are known as ‘Orchards of the world’ for their fruit cultivation. People have removed the natural vegetation here in order to cultivate what they want to. So, Citrus fruits such as oranges, figs, olives and grapes are commonly cultivated here.
Incorrect
Solution: c)
Mediterranean forests are found in areas around Mediterranean Sea, Central Chile, South-West USA, Australia, Africa. They have thick barks and wax coated leaves which help them reduce transpiration. Due to these characteristics, Mediterranean trees adapt themselves to dry summers. Mediterranean Forests are known as ‘Orchards of the world’ for their fruit cultivation. People have removed the natural vegetation here in order to cultivate what they want to. So, Citrus fruits such as oranges, figs, olives and grapes are commonly cultivated here.
-
Question 3 of 5
3. Question
Oil spills can be treated with bioremediation by using some species of
- Archea
- Plants
- Bacteria
- Algae
- Fungi
Select the correct answer using the codes below.
Correct
Solution: d)
Bioremediation refers to the use of specific microorganisms or plants to metabolize and remove harmful substances. These organisms are known for their biochemical and physical affinity to hydrocarbons among other pollutants. Various types of bacteria, archaea, algae, fungi, and some species of plants are all able to break down specific toxic waste products into safer constituents.
Incorrect
Solution: d)
Bioremediation refers to the use of specific microorganisms or plants to metabolize and remove harmful substances. These organisms are known for their biochemical and physical affinity to hydrocarbons among other pollutants. Various types of bacteria, archaea, algae, fungi, and some species of plants are all able to break down specific toxic waste products into safer constituents.
-
Question 4 of 5
4. Question
The higher the amount of biological oxygen demand (BOD) in a certain segment of water
- The greater the amount of organic matter available for oxygen consuming bacteria.
- Higher could be the level of pollution in the water
Select the correct answer code:
Correct
Solution: c)
Biochemical Oxygen Demand or Biological Oxygen Demand, is a measurement of the amount of dissolved oxygen (DO) that is used by aerobic microorganisms when decomposing organic matter in water.
Biochemical Oxygen Demand is an important water quality parameter because it provides an index to assess the effect discharged wastewater will have on the receiving environment. The higher the BOD value, the greater the amount of organic matter or “food” (read nutrients) available for oxygen consuming bacteria.
Incorrect
Solution: c)
Biochemical Oxygen Demand or Biological Oxygen Demand, is a measurement of the amount of dissolved oxygen (DO) that is used by aerobic microorganisms when decomposing organic matter in water.
Biochemical Oxygen Demand is an important water quality parameter because it provides an index to assess the effect discharged wastewater will have on the receiving environment. The higher the BOD value, the greater the amount of organic matter or “food” (read nutrients) available for oxygen consuming bacteria.
-
Question 5 of 5
5. Question
Consider the following statements regarding ocean acidification.
- It largely occurs due to the high absorption of nitrogenous based acidic compounds.
- Introduction of sea grasses can reduce the impact of acidification.
Which of the above statements is/are correct?
Correct
Solution: b)
Ocean acidification refers to a reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide (CO2) from the atmosphere. Nitrogenous compounds contribute fraction to ocean acidification.
Sea grass has ability to control ocean acidification.
Incorrect
Solution: b)
Ocean acidification refers to a reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide (CO2) from the atmosphere. Nitrogenous compounds contribute fraction to ocean acidification.
Sea grass has ability to control ocean acidification.
