INSIGHTS STATIC QUIZ 2019
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Question 1 of 5
1. Question
Humus is the dark organic matter that forms in the soil when plant and animal matter decays.
Consider the following statements in this context.
- Humus contains nitrogen that is essential for plant growth and helps in nutrient retention.
- Humus contributes to moisture retention in the soil by increasing micro-porosity.
Which of the above statements is/are correct?
Correct
Solution: c)
Humus should be differentiated from decomposing organic matter. The latter is rough- looking material and remains of the original plant are still visible. Fully humified organic matter, on the other hand, has a uniform dark, spongy, jelly-like appearance, and is amorphous. It may remain like this for millennia or more.
The process of humification can occur naturally in soil, or in the production of compost.
Humus has a characteristic black or dark brown color and is organic due to an accumulation of organic carbon.
The rate at which raw organic matter is converted into humus promotes (when fast) or limits (when slow) the coexistence of plants, animals, and microbes in soil.
Effective humus and stable humus are further sources of nutrients to microbes, the former provides a readily available supply, and the latter acts as a longer-term storage reservoir.
Incorrect
Solution: c)
Humus should be differentiated from decomposing organic matter. The latter is rough- looking material and remains of the original plant are still visible. Fully humified organic matter, on the other hand, has a uniform dark, spongy, jelly-like appearance, and is amorphous. It may remain like this for millennia or more.
The process of humification can occur naturally in soil, or in the production of compost.
Humus has a characteristic black or dark brown color and is organic due to an accumulation of organic carbon.
The rate at which raw organic matter is converted into humus promotes (when fast) or limits (when slow) the coexistence of plants, animals, and microbes in soil.
Effective humus and stable humus are further sources of nutrients to microbes, the former provides a readily available supply, and the latter acts as a longer-term storage reservoir.
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Question 2 of 5
2. Question
Consider the following statements regarding dissolved oxygen in an aquatic ecosystem
- It increases with increase in temperature of a water-body.
- Its concentration in fresh water is usually more than the concentration of oxygen in air.
- Snow cover of ice on water reduces dissolved oxygen concentration.
Which of the above statements is/are correct?
Correct
Solution: b)
Dissolved oxygen (DO) is a measure of how much oxygen is dissolved in the water – the amount of oxygen available to living aquatic organisms. The amount of dissolved oxygen in a stream or lake can tell us a lot about its water quality.
Oxygen concentrations are much higher in air, which is about 21% oxygen, than in water, which is a tiny fraction of 1 percent oxygen.
Dissolved oxygen levels decrease with increasing temperature and atmospheric oxygen content is far higher than dissolved oxygen levels.
Ice and snow reduce the amount of sunlight reaching aquatic plants, thereby reducing photosynthesis and oxygen production.
Incorrect
Solution: b)
Dissolved oxygen (DO) is a measure of how much oxygen is dissolved in the water – the amount of oxygen available to living aquatic organisms. The amount of dissolved oxygen in a stream or lake can tell us a lot about its water quality.
Oxygen concentrations are much higher in air, which is about 21% oxygen, than in water, which is a tiny fraction of 1 percent oxygen.
Dissolved oxygen levels decrease with increasing temperature and atmospheric oxygen content is far higher than dissolved oxygen levels.
Ice and snow reduce the amount of sunlight reaching aquatic plants, thereby reducing photosynthesis and oxygen production.
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Question 3 of 5
3. Question
Consider the following statements about Pulicat Lake
- Pulicat Lagoon is the largest brackish water lagoon in India.
- The annual Flamingo Festival is held at Pulicat lake.
- The lake encompasses Pulicat Lake Bird Sanctuary.
Which of the above statements is/are correct?
Correct
Solution: c)
Pulicat Lagoon is the second largest brackish water lagoon in India, after Chilika Lake. The lake encompasses the Pulicat Lake Bird Sanctuary.
Flamingo festival is an annual festival held in the Pulicat Lake.
Incorrect
Solution: c)
Pulicat Lagoon is the second largest brackish water lagoon in India, after Chilika Lake. The lake encompasses the Pulicat Lake Bird Sanctuary.
Flamingo festival is an annual festival held in the Pulicat Lake.
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Question 4 of 5
4. Question
Which of the following national and international events monitors Ozone pollution?
- Gothenburg Protocol
- Bonn Convention
- National Air Quality index
- System of Air Quality and Weather Forecasting
Select the correct answer code:
Correct
Solution: b)
The 1999 Gothenburg Protocol to Abate Acidification, Eutrophication and Ground-level Ozone is a multi-pollutant protocol designed to reduce acidification, eutrophication and ground-level ozone. The Protocol is part of the Convention on Long-Range Transboundary Air Pollution.
The Convention on Migratory Species (CMS), also known as the Bonn Convention, aims to conserve terrestrial, aquatic and avian migratory species throughout their range.
Ozone has been classified and monitored as one of the eight pollutants under National Air Quality index.
Ozone is monitored as one of the Pollutants under SAFAR (System of Air Quality and Weather Forecasting).
Incorrect
Solution: b)
The 1999 Gothenburg Protocol to Abate Acidification, Eutrophication and Ground-level Ozone is a multi-pollutant protocol designed to reduce acidification, eutrophication and ground-level ozone. The Protocol is part of the Convention on Long-Range Transboundary Air Pollution.
The Convention on Migratory Species (CMS), also known as the Bonn Convention, aims to conserve terrestrial, aquatic and avian migratory species throughout their range.
Ozone has been classified and monitored as one of the eight pollutants under National Air Quality index.
Ozone is monitored as one of the Pollutants under SAFAR (System of Air Quality and Weather Forecasting).
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Question 5 of 5
5. Question
Basel Ban Amendment is related to
Correct
Solution: c)
The 1995 Basel Ban Amendment, a global waste dumping prohibition, has become an international law after Croatia ratified it on September 6, 2019.
Croatia became the 97th country to ratify the ban, which was adopted by the parties to the Basel Convention in 1995, to protect human health and the environment against the adverse effects of hazardous wastes, according to Basel Action Network (BAN).
BAN is a Unites States-based charity organisation and is one among the organisations and countries, which created the Basel Ban Amendment — hailed as a landmark agreement for global environmental justice.
The Ban Amendment prohibits all export of hazardous wastes, including electronic wastes and obsolete ships from 29 wealthiest countries of the Organization of Economic Cooperation and Development (OECD) to non-OECD countries.
Incorrect
Solution: c)
The 1995 Basel Ban Amendment, a global waste dumping prohibition, has become an international law after Croatia ratified it on September 6, 2019.
Croatia became the 97th country to ratify the ban, which was adopted by the parties to the Basel Convention in 1995, to protect human health and the environment against the adverse effects of hazardous wastes, according to Basel Action Network (BAN).
BAN is a Unites States-based charity organisation and is one among the organisations and countries, which created the Basel Ban Amendment — hailed as a landmark agreement for global environmental justice.
The Ban Amendment prohibits all export of hazardous wastes, including electronic wastes and obsolete ships from 29 wealthiest countries of the Organization of Economic Cooperation and Development (OECD) to non-OECD countries.
