Insights Static Quiz -452, 2019
Environment
INSIGHTS STATIC QUIZ 2019
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Question 1 of 5
1. Question
Consider the following statements regarding Ecological Pyramids.
- Pyramid of biomass shows a sharp decrease in biomass at higher trophic levels.
- Small standing crop of phytoplankton supporting large standing crop of zooplankton is an example for Inverted pyramid of biomass.
- Primary producers convert only 1% of the energy in the sunlight available to them into Net Primary Productivity.
Which of the above statements is/are correct?
Correct
Solution: d)
Incorrect
Solution: d)
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Question 2 of 5
2. Question
Consider the following statements.
- In all ecosystems, all the pyramids, of number, of energy and biomass are upright.
- Energy at a lower trophic level is always more than at a higher level.
- Ecological pyramids take into account the same species belonging to two or more trophic levels.
Which of the above statements is/are incorrect?
Correct
Solution: c)
In most ecosystems, all the pyramids, of number, of energy and biomass are upright, i.e., producers are more in number and biomass than the herbivores, and herbivores are more in number and biomass than the carnivores. Also, energy at a lower trophic level is always more than at a higher level.
There are certain limitations of ecological pyramids such as it does not take into account the same species belonging to two or more trophic levels.
Incorrect
Solution: c)
In most ecosystems, all the pyramids, of number, of energy and biomass are upright, i.e., producers are more in number and biomass than the herbivores, and herbivores are more in number and biomass than the carnivores. Also, energy at a lower trophic level is always more than at a higher level.
There are certain limitations of ecological pyramids such as it does not take into account the same species belonging to two or more trophic levels.
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Question 3 of 5
3. Question
The Global Environment Facility (GEF) serves as a financial mechanism for which of the following conventions?
- Convention on Biological Diversity (CBD)
- Convention on the International Trade in Endangered Species of Wild Flora and Fauna (CITES)
- UN Convention to Combat Desertification (UNCCD)
- Montreal Protocol on Substances that Deplete the Ozone Layer
Select the correct code:
Correct
Solution: b)
The GEF provides funding to assist developing countries in meeting the objectives of international environmental conventions. The GEF serves as “financial mechanism” to five conventions, which are Convention on Biological Diversity (CBD), United Nations Framework Convention on Climate Change (UNFCCC), Stockholm Convention on Persistent Organic Pollutants (POPs), UN Convention to Combat Desertification (UNCCD), and Minamata Convention on Mercury.
Incorrect
Solution: b)
The GEF provides funding to assist developing countries in meeting the objectives of international environmental conventions. The GEF serves as “financial mechanism” to five conventions, which are Convention on Biological Diversity (CBD), United Nations Framework Convention on Climate Change (UNFCCC), Stockholm Convention on Persistent Organic Pollutants (POPs), UN Convention to Combat Desertification (UNCCD), and Minamata Convention on Mercury.
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Question 4 of 5
4. Question
Consider the following biosphere reserves.
- Nokrek
- Great Nicobar
- Gulf of Mannar
- Simlipal
Which of the above are not included in the world network by UNESCO?
Correct
Solution: d)
All the above have been included in world network of UNESCO’s biosphere reserve.
Incorrect
Solution: d)
All the above have been included in world network of UNESCO’s biosphere reserve.
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Question 5 of 5
5. Question
Consider the following statements.
- Bioleaching is used essentially for the recovery of copper, uranium and gold.
- Bioaugmentation can be involved in bioremediation.
- Biosparging can be used to reduce concentrations of petroleum constituents that are dissolved in groundwater.
Which of the above statements is/are incorrect?
Correct
Solution: d)
Bioleaching is a simple and effective technology for metal extraction from low-grade ores and mineral concentrates. At present bioleaching is used essentially for the recovery of copper, uranium and gold, and the main techniques employed are heap, dump and in situ leaching. Bioleaching has also some potential for metal recovery and detoxification of industrial waste products, sewage sludge and soil contaminated with heavy metals.
Biosparging is an in-situ remediation technology that uses indigenous microorganisms to bio-degrade organic constituents in the saturated zone. In biosparging, air (or oxygen) and nutrients (if needed) are injected into the saturated zone to increase the biological activity of the indigenous microorganisms. Biosparging can be used to reduce concentrations of petroleum constituents that are dissolved in groundwater, adsorbed to soil below the water table, and within the capillary fringe. Although constituents adsorbed to soils in the unsaturated zone can also be treated by biosparging, bioventing is typically more effective for this situation.
Bioremediation strategies can involve natural attenuation, bioaugmentation, or biostimulation and can take place in situ or ex situ.
Incorrect
Solution: d)
Bioleaching is a simple and effective technology for metal extraction from low-grade ores and mineral concentrates. At present bioleaching is used essentially for the recovery of copper, uranium and gold, and the main techniques employed are heap, dump and in situ leaching. Bioleaching has also some potential for metal recovery and detoxification of industrial waste products, sewage sludge and soil contaminated with heavy metals.
Biosparging is an in-situ remediation technology that uses indigenous microorganisms to bio-degrade organic constituents in the saturated zone. In biosparging, air (or oxygen) and nutrients (if needed) are injected into the saturated zone to increase the biological activity of the indigenous microorganisms. Biosparging can be used to reduce concentrations of petroleum constituents that are dissolved in groundwater, adsorbed to soil below the water table, and within the capillary fringe. Although constituents adsorbed to soils in the unsaturated zone can also be treated by biosparging, bioventing is typically more effective for this situation.
Bioremediation strategies can involve natural attenuation, bioaugmentation, or biostimulation and can take place in situ or ex situ.
