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
The greenhouse effect is due to the presence of
(A) the ozone layer in the atmosphere
(B) infrared light reaching the earth
(C) moisture layer in the atmosphere
(D) CO₂ layer in the atmosphere
Option d – CO₂ layer in the atmosphere
Global warming can be controlled by the following measures, except
(A) Cutting down the use of fossil fuels
(B) Improving the efficiency of energy usage
(C) Reducing afforestation
(D) Control the growth of the human population
Option c – Reducing afforestation
Select the INCORRECT match with respect to the process of decomposition.
(A) Fragmentation – Breaking down of detritus matter into smaller particles
(B) Humification – Water-soluble inorganic – nutrients reach the soil horizon and get precipitated as salts
(C) Mineralization – Inorganic nutrients are released from the degraded humus
(D) Catabolism – Bacterial and fungal enzymes degrade detritus into simpler inorganic substances
Option b – Humification – Water-soluble inorganic – nutrients reach the soil horizon and get precipitated as salts
Select the INCORRECT statement from the following.
(A) In an aquatic ecosystem, the grazing food chain is the major conduit for energy flow.
(B) The Detritus food chain begins with dead organic matter.
(C) Decomposers like bacteria and fungi meet their energy demands by degrading the dead organic matter.
(D) In an aquatic ecosystem, a much larger fraction of energy flows through the detritus food chain than through the grazing food chain.
Option d – In an aquatic ecosystem, a much larger fraction of energy flows through the detritus food chain than through the grazing food chain.
Read the following statements and select the correct option. Statement I: There is a danger of seepage of chemicals from sanitary landfills polluting the underground water resources. Statement II: Open-burning dumps are a substitute for sanitary landfills.
(A) Statement I is correct, and Statement II is incorrect.
(B) Statement I is incorrect, and Statement II is correct.
(C) Both Statements I and II are correct.
(D) Both Statements I and II are incorrect.
Option a – Statement I is correct, and Statement II is incorrect.
Dobson unit (DU) is used to measure the
(A) the concentration of toxicants in the aquatic food chain.
(B) the intensity of sound pollution.
(C) the thickness of the ozone layer.
(D) biological oxygen demand.
Option c – the thickness of the ozone layer.
Which of the following is CORRECT regarding “Joint Forest Management?
(A) It is the conservation of forest and agricultural land by the government.
(B) It is a policy introduced by the government that checks the interference of local communities in forest lands.
(C) It involves the working of the government in close association with local communities for protecting and managing the forest.
(D) It is a concept introduced by the government to protect forests without the involvement of local communities.
Option c – It involves the working of the government in close association with local communities for protecting and managing the forest.
Read the given statements and select the correct option. Statement I: Eichhornia crassipes is known as the Terror of Bengal”. Statement II: Water Hyacinth is the world’s most problematic aquatic weed that grows abundantly in eutrophic water bodies.
(A) Statement I is correct and statement II is incorrect
(B) Statement II is correct and statement I is incorrect
(C) Statement I and Statement II both are correct.
(D) Statement I and Statement II both are incorrect.
Option c – Statement I and Statement II both are correct.
Zooplanktons, grasshoppers, and cows occupy ……… trophic level.
(A) 1st
(B) 2nd
(C) 3rd
(D) 4th
Option b – 2nd
Read the given statements and select the correct option. Statement I: Crop fields and aquariums are examples of man-made ecosystems. Statement II: Wetlands and estuaries are aquatic ecosystems.
(A) Statement I is correct.
(B) Statement II is correct.
(C) Both statement I and statement II are correct.
(D) Both statement I and statement II are incorrect.
Option c – Both statement I and statement II are correct.
Observe the food chain given below. Grass → Beetle → Frog → Snake → Hawk Frog is which of the following type of consumer?
(A) Primary consumer
(B) Secondary consumer
(C) Tertiary consumer
(D) Primary herbivore
Option b – Secondary consumer
Water (Prevention and Pollution Control) Act was enacted in …….. to safeguard water resources.
(A) 1974
(B) 1981
(C) 1987
(D) 1990
Option a – 1974
The rate of decomposition depends upon
(A) chemical composition of detritus
(B) temperature
(C) the moisture content of the soil
(D) all of these
Option d – all of these
Biomagnification is
(A) an increase in the concentration of toxicants at successive trophic levels.
(B) increase in biomass of organisms in an ecosystem.
(C) growth of organisms due to the availability of unlimited resources.
(D) mass mortality of organisms to due a decline in the level of dissolved oxygen.
Option a – an increase in the concentration of toxicants at successive trophic levels.
The pioneers of hydrarch succession are
(A) phytoplanktons
(B) lichens
(C) bryophytes
(D) reed swamps
Option a – phytoplanktons
A pond near a village suffered heavy mortality of fish within a few days. Which of the following can NOT be a probable reason for this?
(A) Herbicide residues from agriculture runoff and seepage water
(B) Spraying of DDT
(C) Sharp decline in the level of dissolved oxygen
(D) Decline in the population of phytoplanktons
Option d – Decline in the population of phytoplanktons
Read the given statements and select the correct option. Statement I: Low temperature and anaerobiosis promote decomposition. Statement II: Decomposition is the process of breakdown down complex organic matter into simple inorganic substances.
(A) Statement I is correct and statement II is incorrect
(B) Statement II is correct and statement I is incorrect
(C) Statement I and Statement II both are correct.
(D) Statement I and Statement II both are incorrect.
Option b – Statement II is correct and statement I is incorrect
Bharat stage III norms are enforced across the country since
(A) 1990
(B) 2005
(C) 2010
(D) 2015
Option c – 2010
In the given food chain, an increase in the population of owls may result in Plants – Grasshopper – Bulbul – Snake – Owl
(A) the decreased population of bulbul
(B) the decreased population of producers
(C) the decreased population of snakes
(D) the increased population of grasshoppers.
Option c – the decreased population of snakes
The rate of formation of new organic matter by consumers is termed as
(A) Primary productivity
(B) Secondary productivity
(C) Net primary productivity
(D) Gross primary productivity
Option b – Secondary productivity
Which of the following is true with respect to Biochemical Oxygen Demand (BOD)?
(A) It is the amount of O2 utilized by organisms during respiratory activities.
(B) It is the total amount of O₂ dissolved in water.
(C) It is the amount of O₂ required by microorganisms for the breakdown of organic substances present in the water sample.
(D) all of above
Option c – It is the amount of O₂ required by microorganisms for the breakdown of organic substances present in the water sample.
The vertical distribution of different species occupying different levels is called
(A) eutrophication
(B) fragmentation
(C) zonation
(D) stratification
Option d – stratification
………. removes over 99% of particulate matter present in exhaust from the thermal power plant.
(A) Smelter
(B) Scrubber
(C) Electrostatic precipitator
(D) Catalytic converters
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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