Question: From NCERT NEET 2020
A species that was introduced for ornamentation but has become a troublesome weed in India :
1. Parthenium hysterophorus
2. Eichhornia crassipes
3. Prosopis juliflora
4. Trapa Spinosa
Answer ▽
2. Eichhornia crassipes
Eichhornia crassipes also known as water hyacinth native to the Amazon basin is an aquatic plant. It grows invasively throughout the water bodies covering all of the top surfaces. This devoids the aquatic life of oxygen resulting in a decline in the number of fish. It was introduced in Bengal for its beautiful flowers and leaves. Later it turned out to be an invasive weed that drains all of the oxygen from the water bodies resulting in the death of fish. In Bengal, fish makes a major supplement of food. Thus, this invasive weed is termed out to be highly problematic. It is also called “Terror of Bengal”.
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Question: From NCERT Derived PYQ
The exotic species, which when introduced in India became notorious weed, is
A. Lantana camara
B. Eichhornia crassipes
C. Parthenium hysterophorus
D. All of these
organisednotes.blogspot.com
Answer ▽
An invasive species is referred to as a non-native species that spreads from a point of introduction to invade the new habitat and alter it negatively. They are usually introduced for beneficial purposes but can lead to environmental, ecological, and economic damage. They pose a serious economic, social, and environmental threat. Thus, they need to be studied properly and managed sustainably.
Lantana camara belonging to Verbenaceae sp. a native species in South America was introduced to Indian habitats by the British as an ornamental plant. It was around 200 years ago when the Forest officials in different parts of the country watched helplessly the uncontrollable spread of this species. This invasive plant spread endlessly with all efforts for its control going in vain.
Eichhornia crassipes also known as water hyacinth native to the Amazon basin is an aquatic plant. It grows invasively throughout the water bodies covering all of the top surfaces. This devoids the aquatic life of oxygen resulting in a decline in the number of fish. It was introduced in Bengal for its beautiful flowers and leaves. Later it turned out to be an invasive weed that drains all of the oxygen from the water bodies resulting in the death of fish. In Bengal, fish makes a major supplement of food. Thus, this invasive weed is termed out to be highly problematic. It is also called “Terror of Bengal”.
Parthenium hysterophorus which is a member of the aster family or Asteraceae sp. is a flowering plant that is native to the American tropics. It first appeared as an invader as a contaminant in wheat imported from America. The weed later turned out to be an invasive species that can grow on disturbed land, including roadsides. It can infect pastures and farmland becoming equally dangerous for all flora and fauna. It is also dangerous for humans. It leaves the soil where it grows infertile.
Therefore, from the above discussion, we can conclude that the right answer is option D.
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Question: From NCERT NEET 2020
Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants
1. Vehicular exhaust
2. Allergy causing pollen
3. Noise
4. Particulates of size 2.5 micrometer or below
Answer ▽
3. Noise
Air (Prevention and Control of Pollution) Act, 1981, is meant for preserving quality of air, controlling air pollution and preventing detrimental effects of air pollutants and human health and health of other biological entities. By an amendment in 1987, noise was also recognized as an air pollutant.
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Question: From NCERT Derived PYQ
Answer ▽
Correct option is A)
Environmental Issues:Memorization tricks (4 min read) (organisednotes.blogspot.com)
The Air (Prevention and Control of Pollution) Act was enacted in 1981 and amended in 1987 to provide for the prevention, control and abatement of air pollution in India.
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Question: From NCERT NEET 2019
Which of these following methods is the most suitable for disposal of nuclear waste?
1. Bury the waste within rocks deep below the Earth's surface
2. Shoot the waste into space
3. Bury the waste under Antarctic ice-cover
4. Dump the waste within rocks under deep ocean
Answer ▽
1. Bury the waste within rocks deep below the Earth's surface
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Question: From NCERT NEET 2019
Which of the following pairs of gases is mainly responsible for green house effect?
1. Carbon dioxide and methane
2. Ozone and Ammonia
3. Oxygen and Nitrogen
4. Nitrogen and Sulphur dioxide
Answer ▽
1. Carbon dioxide and methane
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Question: From NCERT NEET 2019
Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:
1. making tubes and pipes
2. making plastic sacks
3. use as a fertilizer
4. construction of roads
Answer ▽
4. construction of roads
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Question: From NCERT NEET 2019
Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere?
1. Geneva protocol
2. Montreal protocol
3. Kyoto protocol
4. Gothenburg protocol
Answer ▽
2. Montreal protocol
Environmental Issues:Memorization tricks (4 min read) (organisednotes.blogspot.com)
Montreal protocol is the simpler name for "Montreal protocol on substances that deplete the Ozone layer" is the International treaty that aims for the protection of the Ozone layer by reducing the emission of chlorofluorocarbons into the atmosphere. It was signed on 26th August of 1987 and was made pursuant to the 1985 Vienna Convention for the Protection of the Ozone Layer.
Additional Information: Let us know more about the other treaty mentioned in the question:
Kyoto protocol: It is a treaty that commits state parties to reduce the emission of greenhouse gases that causes global warming. It extends the 1992 United Nations Framework Convention on Climate Change (UNFCCC) and was adopted in Kyoto, Japan on the 11th of December, 1997. This treaty, having 192 parties currently, entered into force later on 16th February of 2005.
Gothenburg protocol: It is the simpler name of the 1999 Gothenburg Protocol to Abate Acidification, Eutrophication, and Ground-level Ozone and is a multi-pollutant protocol to reduce acidification, Eutrophication, and ground-level ozone by reducing the emission of sulfur dioxide, nitrogen oxides, volatile organic compounds, and ammonia. This protocol was ratified by 26 parties.
Geneva protocol: The simpler name of the Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare that prohibits the use of chemical as well as biological weapons in international armed conflicts. It was signed in Geneva on the 17th of June in 1925 and entered into force later on 8 February, 1928.
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Question: From NCERT NEET 2019 :::
Which of the following statements about ozone is correct ?
1. Tropospheric ozone protects us from UV radiations.
2. Stratospheric ozone is 'bad'.
3. Tropospheric ozone is 'good'
4. Stratospheric ozone protects us from UV radiations.
Subtopic: Ozone Layer Depletion |
Answer ▽
4. Stratospheric ozone protects us from UV radiations.
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Question: From NCERT NEET 2019
Which of the following is an innovative remedy for plastic waste ?
1. Burning in the absence of oxygen
2. Burrying 500 m deep below soil surface
3. Polyblend
4. Electrostatic precipitator
Answer ▽
3. Polyblend
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Question: From NCERT NEET 2019 Derived PYQ
If an agricultural field is liberally, irrigated for a prolonged period of time, it is likely to face a problem of :
1. Metal toxicity
2. Alkalinity
3. Acidity
4. Salinity
Answer ▽
4. Salinity
Irrigation should be optimal since the output of crops can be ruined even by over-irrigation. Since roots do not tolerate standing water, excess water contributes to waterlogging, hampers germination, increases salt concentration, and de- rooting. Thus, for the best cultivation, the correct method is to be used.
- The salinity problem is likely to be produced by prolonged liberal irrigation of agricultural fields.
- Salinity means that salt accumulates in soil and lowers the consistency of the soil and water.
- Salinity decreases the ability of the plant to absorb water, contributing to a reduction in the growth rate of the plant.
- Salinity causes salt stress in plants.
- Prolonged liberal irrigation results in nutrient depletion in the soil so that the plants do not grow properly.
- Irrigation provides the requisite moisture for development and growth, germination, and other related functions.
- In India, multiple cropping is not feasible because in most regions the rainy season is unique.
- The climate, however, supports cultivation throughout the year.
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Question: From NCERT NEET 2018 Derived PYQ
1. Carbon
2. Cl
3. Fe
4. Oxygen
Answer ▽
2. Cl
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Question: From NCERT NEET 2018 Derived PYQ
Match the items given in Column I with those inColumn II and select the correct option givenbelow:
Column I Column II
a. Eutrophication i. UV-B radiation
b. Sanitary landfill ii. Deforestation
c. Snow blindness iii. Nutrient enrichment
d. Jhum cultivation iv. Waste disposal
1. a-ii b-i c-iii d-iv
2. a-i b-iii c-iv d-ii
3. a-iii b-iv c-i d-ii
4. a-i b-ii c-iv d-iii
Answer ▽
3. a-iii b-iv c-i d-ii
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Question: From NCERT NEET 2016 Derived PYQ
A lake which is rich in organic waste may result in
(1) increased population of aquatic organisms due to minerals
(2) drying of the lake due to algal bloom
(3) increased population of fish due to lots of nutrients
(4) mortality of fish due to lack of oxygen
Answer ▽
(4) mortality of fish due to lack of oxygen
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Question: From NCERT NEET 2016 Derived PYQ
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers
(1) ozone
(2) ammonia
(3) methane
(4) nitrous oxide
Answer ▽
(1) ozone
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Question: From NCERT NEET 2016 Derived PYQ
Joint Forest Management Concept was introduced in India during
(1) 1970s
(2) 1980s
(3) 1990s
(4) 1960s
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Question: From NCERT NEET 2016 Derived PYQ
A river with an inflow of domestic sewage rich in organic waste may result in
1. increased population of aquatic food web organisms
2. an increased production of fish due to biodegradable nutrients
3. death of fish due to lack of oxygen
4. drying of the river very soon due to algal bloom
Answer ▽
3. death of fish due to lack of oxygen
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Question: From NCERT NEET 2015 Derived PYQ
Increase in concentration of the toxicant at successive tropic levels is known as
1. biomagnification
2. biodeterioration
3. biotransformation
4. biogeochemical cycling
Answer ▽
1. biomagnification
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Question: From NCERT NEET 2015 Derived PYQ
Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of
1. food
2. light
3. essential minerals
4. Oxygen
Answer ▽
4. Oxygen
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Question: From NCERT NEET 2015 Derived PYQ
Which of the following is not one of prime health risks associated with greater UV
radiation through the atmosphere due to depletion of stratospheric zone?
1. Increased skin cancer
2. Reduced immune system
3. Damage to eyes
4. Increased liver cancer
Answer ▽
4. Increased liver cancer
Due to the depletion of the stratosphere layer the ozone layer present in this layer also gets depleted. And due to this depletion of the ozone layer ultraviolet rays from the sun can enter the earth’s atmosphere easily. These ultraviolet rays can cause mutation in the cell and change the structure of the genetic due to which they have some structural deformity and also functional deformity. These ultraviolet rays cause mutations in the eye cells and adversely affect the eye, they can change the shape and size of the rod cells and the cone cells which are present on the retina of the eye which is responsible for the vision of the eye.
These ultraviolet rays also cause mutations in the skin cells and due to which problems like skin cancer can be seen easily in our day to day life.
These radiations also cause harm to the immune cells of the human body, the mutations in these cells and reduce the immune response action of our body. The liver cancer is commonly caused by the excessive intake of alcohol for A long period of time on a regular basis and also causes liver cirrhosis, liver cancer is not commonly caused by the ultraviolet radiation.
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Question: From NCERT NEET 2014 Derived PYQ
A scrubber in the exhaust of a chemical industrial plant removes
1. Gases like sulphur dioxide
2. Particulate matter of the size 5 micrometer or above
3. Gases like ozone and methane
4. Particulate matter of the size 2.5 micrometer or less
Answer ▽
1. Gases like sulphur dioxide
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Question: From NCERT NEET 2013 Derived PYQ
The Air Prevention and Control of Pollution Act came into force in ?
1. 1975
2. 1981
3. 1985
4. 1990
Answer ▽
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Question: From NCERT NEET 2012 Derived PYQ
In an area where DDT had been used extensively, the population of birds declined
significantly because
1. birds stopped laying eggs
2. earthworms in the area got eradicated
3. cobras were feeding exclusively on birds
4. many of the birds laid eggs and the eggs hatched early
Answer ▽
4. many of the birds laid eggs and the eggs hatched early
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Question: From NCERT NEET 2012 Derived PYQ
Which one of the following is a wrong statement?
1. Most of the forests have been lost in tropical areas
2. Ozone in upper part of atmosphere is harmful to animals
3. Greenhouse effect is a natural phenomenon
4. Eutrophication is a natural phenomenon in freshwater bodies
Answer ▽
2. Ozone in upper part of atmosphere is harmful to animals
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Question: From NCERT NEET 2011 Derived PYQ
Which one of the following pairs of gases are the major cause of Green house effect?
1. CO2 and CO
2. CFCs and SO2
3. CO2 and N20
4. CO2 and O3
Answer ▽
3. CO2 and N20
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Question: From NCERT NEET Derived PYQ
Eutrophication is often seen in
1. fresh water lakes
2. ocean
3. mountains
4. deserts
Answer ▽
1. fresh water lakes
Eutrophication cannot happen in running water bodies because it requires the sedimentation of the nutrient in a specific place with less toxicant.
Eutrophication is the normal interaction of maturing of a freshwater lake by supplement enhancement of its water. With time, streams depleting into the lake present supplements like nitrogen and phosphorus from manures, which empower the development of green growth which exhausts the degree of broken oxygen in the lake which thus upsets the oceanic life.
Subsequent to seeing the image of youngsters swimming in an ocean of kelp, you will unquestionably think about what peculiar marvel has hit the shore of Qingdao in eastern China. It is an unusual development of green growth, a reasonable appearance of an interaction called eutrophication. "Eutrophication is an improvement of water by supplement salts that makes underlying changes in the biological system like expanded creation of green growth and amphibian plants, consumption of fish species, general weakening of water quality, and different impacts that decrease and block use.
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Question: From NCERT NEET 2010 Derived PYQ
The two gases making highest relative contribution to the greenhouse gases are
1. CO2 and CH4
2. CH4 and NO2
3. CFCs and N20
4. CO2 and N20
Answer ▽
1. CO2 and CH4
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Question: From NCERT NEET 2009 Derived PYQ
Chipko movement was launched for the protection of
1. grasslands
2. forests
3. liverstock
4. wet lands
Answer ▽
2. forests
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Question: From NCERT NEET 2009 Derived PYQ
Montreal protocol aims at
1. reduction of ozone depleting substances
2. biodiversity conservation
3. control of water pollution
4. control of CO2 emission
Answer ▽
1. reduction of ozone depleting substances
Environmental Issues:Memorization tricks (4 min read) (organisednotes.blogspot.com)
Montreal protocol is the simpler name for "Montreal protocol on substances that deplete the Ozone layer" is the International treaty that aims for the protection of the Ozone layer by reducing the emission of chlorofluorocarbons into the atmosphere. It was signed on 26th August of 1987 and was made pursuant to the 1985 Vienna Convention for the Protection of the Ozone Layer.
Additional Information
Kyoto protocol: It is a treaty that commits state parties to reduce the emission of greenhouse gases that causes global warming. It extends the 1992 United Nations Framework Convention on Climate Change (UNFCCC) and was adopted in Kyoto, Japan on the 11th of December, 1997. This treaty, having 192 parties currently, entered into force later on 16th February of 2005.
Gothenburg protocol: It is the simpler name of the 1999 Gothenburg Protocol to Abate Acidification, Eutrophication, and Ground-level Ozone and is a multi-pollutant protocol to reduce acidification, Eutrophication, and ground-level ozone by reducing the emission of sulfur dioxide, nitrogen oxides, volatile organic compounds, and ammonia. This protocol was ratified by 26 parties.
Geneva protocol: The simpler name of the Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare that prohibits the use of chemical as well as biological weapons in international armed conflicts. It was signed in Geneva on the 17th of June in 1925 and entered into force later on 8 February, 1928.
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Question: From NCERT NEET Derived PYQ
Global agreement in specific control strategies to reduce the release of ozone depleting
substances, was adopted by
1. Rio de Janeiro Conference
2. The Montreal Protocol
3. The Koyoto Protocol
4. The Vienna Convention
Answer ▽
Environmental Issues:Memorization tricks (4 min read) (organisednotes.blogspot.com)
Montreal protocol is the simpler name for "Montreal protocol on substances that deplete the Ozone layer" is the International treaty that aims for the protection of the Ozone layer by reducing the emission of chlorofluorocarbons into the atmosphere. It was signed on 26th August of 1987 and was made pursuant to the 1985 Vienna Convention for the Protection of the Ozone Layer.
Additional Information: Let us know more about the other treaty mentioned in the question:
Kyoto protocol: It is a treaty that commits state parties to reduce the emission of greenhouse gases that causes global warming. It extends the 1992 United Nations Framework Convention on Climate Change (UNFCCC) and was adopted in Kyoto, Japan on the 11th of December, 1997. This treaty, having 192 parties currently, entered into force later on 16th February of 2005.
Gothenburg protocol: It is the simpler name of the 1999 Gothenburg Protocol to Abate Acidification, Eutrophication, and Ground-level Ozone and is a multi-pollutant protocol to reduce acidification, Eutrophication, and ground-level ozone by reducing the emission of sulfur dioxide, nitrogen oxides, volatile organic compounds, and ammonia. This protocol was ratified by 26 parties.
Geneva protocol: The simpler name of the Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare that prohibits the use of chemical as well as biological weapons in international armed conflicts. It was signed in Geneva on the 17th of June in 1925 and entered into force later on 8 February, 1928.
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Question: From NCERT NEET 2008 Derived PYQ
Which one of the following is the correct percentage of the two (out of the total of 4) green-house gases that contribute to the total global warming?
1. CFCs 14%, CH4 20%
2. CO2 40%, CFCs 30%
3. N2O 6%, CO2 86%
4. CH4 20%, N2O 18%
Answer ▽
1. CFCs 14%, CH4 20%
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Question: From NCERT NEET 2006 Derived PYQ
Montreal protocol which calls for appropriate action to protect the ozone layer from
human activities was passed in the year:
1. 1986
2. 1987
3. 1988
4. 1985
Answer ▽
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