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General Issue on Environment Ecology. We covered all the General Issue on Environment Ecology in this post for free so that you can practice well for the exam.
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mcq on General Issue on Environment Ecology for NEET Students
What causes the greenhouse effect on Earth?
(A) Ozone layer present in the Atmosphere
(B) Infrared radiation reaching the Earth
(C) Moisture in the Atmosphere
(D) Accumulation of CO₂ in the Atmosphere
Option d – Accumulation of CO₂ in the Atmosphere
All the following can help reduce global warming, except:
(A) Reducing fossil fuel usage
(B) Enhancing energy efficiency
(C) Cutting down forests
(D) Controlling Population growth
Option c – Cutting down forests
Choose the incorrect match related to decomposition processes.
(A) Fragmentation – Breakdown of detritus into smaller bits
(B) Humification – Inorganic nutrients dissolve and settle as Salts in soil
(C) Mineralization – Humus is broken down to release Inorganic substances
(D) Catabolism – Microbial enzymes degrade Organic Matter into simple forms
Select the incorrect statement from below.
(A) The grazing Food chain is the primary energy path in aquatic systems
(B) Detritus Food chains start with decomposing Organic Matter
(C) Bacteria and fungi feed on dead Matter to obtain energy
(D) Detritus Food chain transfers more energy than the grazing chain in aquatic habitats
Read the statements and select the correct response.
Statement I: Landfills can lead to chemical seepage into groundwater.
Statement II: Open-burning waste dumps can replace sanitary landfills.
(A) Only Statement I is true
(B) Only Statement II is true
(C) Both statements are correct
(D) Both statements are incorrect
Option a – Only Statement I is true
What does the Dobson Unit (DU) measure?
(A) Level of aquatic toxicants in a Food chain
(B) Noise Pollution levels
(C) Ozone layer thickness
(D) Biological oxygen demand
Option c – Ozone layer thickness
What is the objective of Joint Forest Management (JFM)?
(A) To conserve forests and farmland by government efforts alone
(B) To restrict local communities from using Forest resources
(C) To promote collaboration between government and locals for Forest protection
(D) To manage forests without local community involvement
Option c – To promote collaboration between government and locals for Forest protection
Read the statements and pick the correct option.
Statement I: Eichhornia crassipes is called the “Terror of Bengal.”
Statement II: This aquatic weed thrives in nutrient-rich water bodies.
(A) Only Statement I is correct
(B) Only Statement II is correct
(C) Both statements are correct
(D) Both statements are incorrect
Option c – Both statements are correct
At which trophic level do grasshoppers, zooplankton, and cows belong?
(A) First trophic level
(B) Second trophic level
(C) Third trophic level
(D) Fourth trophic level
Option b – Second trophic level
Consider the following statements and choose the correct answer.
Statement I: Crop fields and aquariums are human-made ecosystems.
Statement II: Wetlands and estuaries fall under aquatic ecosystems.
(A) Only Statement I is true
(B) Only Statement II is true
(C) Both statements are true
(D) Both statements are false
Option c – Both statements are true
In the Food chain: Grass → Beetle → Frog → Snake → Hawk, the frog functions as a:
(A) Primary consumer
(B) Secondary consumer
(C) Tertiary consumer
(D) Primary herbivore
Option b – Secondary consumer
When was the Water (Prevention and Pollution Control) Act enforced in India?
(A) 1974
(B) 1981
(C) 1987
(D) 1990
Option a – 1974
What determines the rate of decomposition?
(A) Chemical structure of Organic debris
(B) Soil moisture levels
(C) Environmental temperature
(D) All of the above
Option d – All of the above
What does the term biomagnification refer to?
(A) Rise in toxicant concentration along Food chain levels
(B) Increase in biomass of Organisms in a system
(C) Rapid growth due to ample nutrients
(D) Sudden species death from reduced oxygen levels
Option a – Rise in toxicant concentration along Food chain levels
Who are the initial colonizers in hydrarch succession?
(A) Phytoplankton
(B) Lichens
(C) Bryophytes
(D) Reed swamp plants
Option a – Phytoplankton
What is NOT a likely cause of Mass fish deaths in village ponds?
(A) Agricultural runoff containing herbicides
(B) Use of pesticides like DDT
(C) Sharp drop in dissolved oxygen levels
(D) Fall in phytoplankton numbers
Option d – Fall in phytoplankton numbers
Read the following and select the correct answer.
Statement I: Low oxygen and temperature speed up decomposition.
Statement II: Decomposition breaks complex Organic Matter into simpler Inorganic forms.
(A) Only Statement I is correct
(B) Only Statement II is correct
(C) Both statements are correct
(D) Both statements are incorrect
Option b – Only Statement II is correct
When did Bharat Stage III emission standards become nationwide?
(A) 1990
(B) 2005
(C) 2010
(D) 2015
Option c – 2010
In the Food chain: Plants → Grasshopper → Bulbul → Snake → Owl, what could result from more owls?
(A) Fewer bulbuls
(B) Fewer plants
(C) Fewer snakes
(D) More grasshoppers
Option c – Fewer snakes
What does secondary productivity refer to?
(A) Total Organic Matter produced by plants
(B) New Organic material produced by consumers
(C) Plant productivity after energy loss
(D) Gross energy stored by producers
Option b – New Organic material produced by consumers
Which option correctly defines Biochemical Oxygen Demand (BOD)?
(A) Oxygen used by Organisms during Respiration
(B) Total oxygen available in water
(C) Oxygen needed by microbes to decompose Organic Matter
(D) All of the above
What is the term for vertical species layering within an ecosystem?
(A) Eutrophication
(B) Fragmentation
(C) Zonation
(D) Stratification
Option d – Stratification
Which device removes over 99% of particulate pollutants from thermal power plant emissions?
(A) Smelter
(B) Scrubber
(C) Electrostatic precipitator
(D) Catalytic converter
Option c – Electrostatic precipitator
We covered all the general issue on Environment Ecology above in this post for free so that you can practice well for the exam.
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