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MCQ on Environment Ecology and Biodiversity. We covered all the MCQ on Environment Ecology and Biodiversity in this post for free so that you can practice well for the exam.
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- MCQ on Biodiversity and Conservation
- Biodiversity and Conservation NEET MCQ
MCQ on Environment Ecology for NEET Students
Quick Quiz
In the phosphorus cycle, phosphate becomes available to the plant by
(A) herbivores
(B) producers
(C) decomposers
(D) consumers
Option c – decomposers
Read the given statements and select the correct option. Statement I: The nutrient elements circulate in the ecosystem through biogeochemical cycles. Statement II: Gaseous-type of nutrient cycles include sulphur and phosphorus cycles.
(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.
The recommended method of disposal of radioactive wastes that faced stiff opposition from the public is ( MCQ on Environment Ecology and Biodiversity )
(A) burning radioactive waste at high temperatures.
(B) dumping radioactive waste in a trench.
(C) storing the radioactive wastes in a shielded container and burying it within rocks about 500m deep below the Earth’s surface after sufficient pre-treatment
(D) slash and burn the waste without providing any pre-treatment.
Option c – storing the radioactive wastes in a shielded container and burying it within rocks about 500m deep below the Earth’s surface after sufficient pre-treatment
Read the following statements and select the correct option. i. Like carbon, phosphorus is also released into the atmosphere through the respiratory activities of producers and consumers. ii. 20% of the carbon is found dissolved in oceans. iii. Decomposers contribute to the CO₂ pool by processing waste materials and dead organic matter. iv. Rocks are the natural reservoirs of phosphates.
(A) i and ii are incorrect
(B) ii and iii are correct
(C) iii and iv are incorrect
(D) i and iv are correct
Option a – i and ii are incorrect
Catalytic converters ( MCQ on Environment Ecology and Biodiversity )
(A) have catalysts that reduce the emission of poisonous gases.
(B) convert unburnt hydrocarbons into carbon dioxide and water.
(C) convert carbon monoxide and nitric oxide to CO₂ and N₂ respectively.
(D) all of these
Option d – all of these
The organism that occupies more than one trophic level in the pond ecosystem is
(A) fish
(B) zooplankton
(C) phytoplankton
(D) both (A) and (B)
Option a – fish
Select the INCORRECT match. ( MCQ on Environment Ecology and Biodiversity )
(A) Chornobyl incident – Accidental leakage of poisonous gases
(B) Slash and burn agriculture – Jhum cultivation
(C) Chipko Movement – Garhwal Himalayas
(D) El Nino effect – Impacts the environment
Option a – Chornobyl incident – Accidental leakage of poisonous gases
The plants utilize a considerable amount of ……… during respiration.
(A) Secondary productivity
(B) Primary productivity
(C) Net primary productivity
(D) Gross Primary Productivity
Option d – Gross Primary Productivity
Which of the following functioning will be adversely affected, if decomposers from an ecosystem are eliminated due to some reasons?
(A) Mineral movement will be blocked
(B) Producers will not receive solar energy
(C) Herbivores will be deprived of food
(D) Both (A) and (C)
Option d – Both (A) and (C)
Considering the primary succession in water, the reed swamp stage is followed by ( MCQ on Environment Ecology and Biodiversity )
(A) rooted submerged plant stage
(B) free-floating plant stage
(C) marsh meadow stage
(D) scrub stage
Option c – marsh meadow stage
In an electrostatic precipitator, a scrubber can remove
(A) gases like sulphur dioxide
(B) particulate matter of size 5 micrometers or above
(C) harmless gases like nitrogen and oxygen.
(D) particulate matter of diameter 25 micrometers
Option a – gases like sulphur dioxide
In ecological succession, the individual transitional communities are known as ( MCQ on Environment Ecology and Biodiversity )
(A) seral communities
(B) pioneer species
(C) ecological succession
(D) climax communities
Option a – seral communities
Primary succession on land takes place on/in
(A) abandoned fields
(B) burned or cut forests
(C) flooded lands
(D) bare rocks
Option d – bare rocks
Which of the following is INCORRECT regarding polyblend? ( MCQ on Environment Ecology and Biodiversity )
(A) It is a mixture of plastic and bitumen.
(B) It is mixed with bitumen to enhance the water-repellent properties of bitumen.
(C) It is a fine powder of recycled modified plastic.
(D) The blends of polyblend and bitumen can be used to lay roads.
Option a – It is a mixture of plastic and bitumen.
Identify the INCORRECT statement.
(A) The pyramid of biomass in most of the ecosystems is upright.
(B) The pyramid of biomass in the sea is generally inverted.
(C) The pyramid of energy is always inverted and can never be upright
(D) The pyramid of numbers can be upright as well as inverted.
Option c – The pyramid of energy is always inverted and can never be upright
Increased level of greenhouse gases has caused ( MCQ on Environment Ecology and Biodiversity )
(A) considerable heating of the earth causing global warming
(B) El Nino effect
(C) increased melting of polar ice caps
(D) all of these
Option d – all of these
Identify the ODD one with respect to the consumers of the pond ecosystem.
(A) Molluscs
(B) Zooplanktons
(C) Bottom dwelling forms
(D) Phytoplanktons
Option d – Phytoplanktons
Pick out the INCORRECT statement. ( MCQ on Environment Ecology and Biodiversity )
(A) UV-B damages DNA and mutation may occur.
(B) The high amount of absorption of UV-B radiation causes snow blindness.
(C) The radiations of wavelengths longer than UVB are completely absorbed by Earth’s atmosphere.
(D) High doses of UV-B radiation can cause permanent damage to the cornea.
Option c – The radiations of wavelengths longer than UVB are completely absorbed by Earth’s atmosphere.
Pioneer species like lichens
(A) remain a part of the community till it reaches the climax.
(B) invade a bare area.
(C) eliminate other species.
(D) feed on primary consumers.
Option b – invade a bare area.
Ozone depletion is occurring widely in the ( MCQ on Environment Ecology and Biodiversity )
(A) troposphere
(B) stratosphere
(C) ionosphere
(D) thermosphere
Option b – stratosphere
The base of the pyramid represents the ( MCQ on Environment Ecology and Biodiversity )
(A) secondary consumers
(B) tertiary consumers
(C) decomposers
(D) producers
Option d – producers
Montreal Protocol was signed in Montreal in 1987, to control
(A) the release of toxic chemicals in the air and water.
(B) air pollution.
(C) emission of ozone depletion substances.
(D) deforestation.
Option c – emission of ozone depletion substances.
Domestic sewage when released in water bodies ( MCQ on Environment Ecology and Biodiversity )
(A) reduces dissolved oxygen and biological oxygen demand of the water.
(B) increases dissolved oxygen and biological oxygen demand of the water.
(C) reduces dissolved oxygen but increases the biological oxygen demand of the water.
(D) increases dissolved oxygen but reduce the biological oxygen demand of the water.
Option c – reduces dissolved oxygen but increases the biological oxygen demand of the water.
Which of the following statement regarding ‘ecological communities’ is true?
(A) Their composition and structure remain constant in response to changing environmental conditions.
(B) The changes that occur in a community are non-sequential and anti-parallel with the changes in the physical environment.
(C) The changes that take place in the ecological communities lead to the formation of a climax community that is in near equilibrium with the environment.
(D) Both (B) and (C)
Option c – The changes that take place in the ecological communities lead to the formation of a climax community that is in near equilibrium with the environment.
To remember the contribution of Amrita Devi Bishnoi, the government of India instituted ( MCQ on Environment Ecology and Biodiversity )
(A) an award for promoting proper resource utilization and management.
(B) award for conservation of tribals.
(C) award for the individuals or communities from rural areas that have shown extra courage and dedication in ordinary protecting wildlife.
(D) award for conducting research on the economic use of forests.
Option c – award for the individuals or communities from rural areas that have shown extra courage and dedication in ordinary protecting wildlife.
The concept of sustainable development is related to
(a) possibilism
(b) determinism
(c) neo-determinism
(d) None of the above
Option a – possibilism
Which among the following statements is incorrect regarding the environment? ( MCQ on Environment Ecology and Biodiversity )
(a) Every green plant can decompose its dead body.
(b) Decomposers cannot make their own food.
(c) The biosphere is the fundamental unit of the study of the environment.
(d) In the biosphere physical as well as biological elements are present.
Option a – Every green plant can decompose its dead body
Generally, the environment can be classified into the following categories. Which among the following is not a part of such a category?
(a) Operational Environment
(b) Physical Environment
(c) Cultural Environment
(d) Biological Environment
Option a – Operational Environment
Which of the following statements regarding the hydrosphere is incorrect? ( MCQ on Environment Ecology and Biodiversity )
(a) Under the hydrosphere both surfaces, as well as groundwater, are present.
(b) On earth, 71% percent of water is there.
(c) In the hydrosphere maximum amount of saline water is found in the ocean and sea.
(d) Only 8% of water available on earth is portable.
Option a – Under the hydrosphere both surfaces, as well as groundwater, are present
Who among the following has proposed a deterministic concept in the context of man and environment relation?
(a) Ratzel
(b) Vidal de La Blache
(c) Ernst Haeckel
(d) Tansley
Option a – Ratzel
In which environmental theory nature is considered all-powerful and the man considered a toy in the hands of nature? ( MCQ on Environment Ecology and Biodiversity )
(a) Possibilism
(b) Neo-Determinism
(c) Determinism
(d) None of these
Option c – Determinism
Who of the following used the term ‘deep ecology for the first time?
(a) EP Odum
(b) C Raunkiaer
(c) FE Clements
(d) Arne Naess
Option d – Arne Naess
Which one of the following is the correct order of biological organization ranging from organism to biosphere?
(a) Population – Ecosystem – Community – Landscape
(b) Landscape – Community – Ecosystem – Population
(c) Population – Community – Ecosystem – Landscape
(d) Population – Landscape – Community – Ecosystem
Option c – Population – Community – Ecosystem – Landscape
The term ‘Ecosystem’ was proposed by ( MCQ on Environment Ecology and Biodiversity )
(a) G. Taylor
(b) E. Hartigan
(c) DR Stoddart
(d) Tansley
Option d – Tansley
Which of the following is not correct about the ecosystem?
(a) It comprises both, abiotic and biotic components.
(b) It has its productivity.
(c) It is a closed system.
(d) It is a natural resource system.
Option c – It is a closed system
The concept of ‘Ecological Transition was first used by ( MCQ on Environment Ecology and Biodiversity )
(a) Elton
(b) Bennett
(c) Berkeley
(d) Ratzel
Option b – Bennett
The following forms of relationship exist between man and his environment according to the development of geographical thought. I. Environmental determinism II. Possibilism III. Neo-determinism The correct sequence of the development of these forms of relationships is
(a) II, I, and III
(b) III, I, and II
(c) I, III, and II
(d) I, II, and III
Option d – I, II, and III
Assertion (A) People in polar areas live in houses made up of ice. Reason (R) Climate has an impact on human life. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option a – Both A and R are true and R is the correct explanation of A
Who among the following has used the term ecology for the first time?
(a) AG Tansley
(b) Ernst Haeckel
(c) Griffith Taylor
(d) None of these
Option b – Ernst Haeckel
Ecology is the study of the relationship between
(a) organism and environment
(b) man and forest
(c) soil and water
(d) husband and wife
Option a – organism and environment
Which among the following concept is wrong?
(a) The working system of the environment is governed by Natural Laws.
(b) Terrestrial unity is present in the environmental elements.
(c) The environment is the reserve of physical resources, not biological resources.
(d) Self-enrichment capacity is inherent in the environment.
Option c – The environment is the reserve of physical resources, not biological resources
World Environment Day is celebrated on
(a) 21st March
(b) 23rd September
(c) 5th June
(d) 25th May
Option c – 5th June
Assertion (A) Environment is the store of immense force. Reason (R) Environmental elements are created as a result of environmental forces and processes. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option a – Both A and R are true and R is the correct explanation of A
What is the thin layer of gases around the Earth?
(a) Biosphere
(b) Water Particle
(c) Atmosphere
(d) Hydrosphere
Option c – Atmosphere
Environment refers to
(a) the natural world of land, water, air, plants, and animals that exist around it.
(b) the sum total of conditions that surround human beings at a given point in time.
(c) the interacting system of physical, biological, and cultural elements which are interlinked.
(d) All of the above
Option d – All of the above
The word ‘Environment’ had an origin in which language?
(a) German
(b) French
(c) Spanish
(d) Arab
Option b – French
The environment is a composite state of
(a) biotic factors
(b) physiographic factors
(c) abiotic factors
(d) All of the above
Option d – All of the above
An environment is an indivisible unit that is created by
(a) physical resources
(b) biological resources
(c) physical and biological resources
(d) The combination of physical, biological, and cultural resources.
Option d – The combination of physical, biological, and cultural resources
Which among the following is not the constituent of the physical environment?
(a) Types of landforms
(b) Soils
(c) Minerals
(d) Settlements
Option d – Settlements
Which of the following are the primary consumers in an ecosystem? Select the correct answer from the code given below. I. Ants II. Deer III. Fox IV. Tiger Codes
(a) I and II
(b) II and III
(c) I, II, and III
(d) II, III, and IV
Option a – I and II
Concerning the food chains in ecosystems, which of the following kinds of an organism is/are known as decomposer organisms? I. Virus II. Fungi III. Bacteria Select the correct answer using the codes given below.
(a) Only I
(b) II and Ill
(c) I and III
(d) All of the above
Option b – II and III
Which one of the following is the correct sequence of a food chain?
(a) Diatoms – Crustaceans – Herring
(b) Crustaceans – Diatoms – Herring
(c) Diatoms – Herring – Crustaceans
(d) Crustaceans – Herrings – Diatoms
Option a – Diatoms – Crustaceans – Herring
Trophic level-l includes
(a) Herbivorous animals
(b) Carnivorous animals
(c) Omnivorous animals
(d) Green plants
Option d – Green plants
When we eat the flesh of a goat, we are
(a) primary consumer
(b) secondary consumer
(c) tertiary consumer
(d) None of the above
Option b – secondary consumer
With reference to food chains in ecosystems, consider the following statements. I. A food chain illustrates the order, in which a chain of organisms feeds upon each other. II. Food chains are found within the population of a species. III. A food chain illustrates the numbers of each organism, which are eaten by others. Which of the statements given above is/are correct?
(a) Only I
(b) I and II
(c) I, II, and III
(d) None of these
Option a – Only I
The term “biomagnification means
(a) an increase in cancer cells in an organism.
(b) increase in the concentration of toxic substances due to their accumulation at successive trophic levels.
(c) increase in the growth of the population of any community at a faster pace.
(d) process of observing the micro organelles of the body.
Option b – increase in the concentration of toxic substances due to their accumulation at successive trophic levels
Which one of the following organisms is likely to show the highest concentration of DDT, once it has been introduced into the ecosystem?
(a) Grasshopper
(b) Toad
(c) Snake
(d) Cattle
Option c – Snake
Which of the following statements is true about Bionomics? I. It means “management of life.” II. It is synonymous with ecology. III. It stresses the value of natural systems which influence human systems. Codes
(a) Only I
(b) I and II
(c) II and III
(d) I, II, and III
Option c – II and III
Consider the following. I. Bioaccumulation is the increase in the concentration of a pollutant from the environment to the first organisms in a food chain. II. Biomagnification is the increase in the concentration of a pollutant from one link in a food chain to another. Which of the statements given above is/are true?
(a) Only I
(b) Only II
(c) Both (a) and (b)
(d) None of these
Option c – Both (a) and (b)
In ecological succession, the intermediate developmental phase is known as
(a) ecesis
(b) climay
(c) nudation
(d) sere
Option d – sere
Consider the following statements regarding the phosphorus cycle. I. Phosphorus is an essential nutrient for plants and animals. II. They are naturally found in rocks and minerals. III. Plants directly obtain phosphorus from the atmosphere. Which among the statements given above is/are correct?
(a) Only I
(b) Only Ill
(c) Both I and II
(d) None of these
Option c – Both I and II
Which of the following constitutes a food chain?
(a) Grass, Wheat, and Mango
(b) Grass, Goat, and Human
(c) Goat, Cow, and Elephant
(d) Grass, Fish, and Goat
Option c – Grass, Goat, and Human
The correct order in the food chain of the various components of a terrestrial grass ecosystem is
(a) Grass, Grasshopper, Frog, Snake
(b) Grass, Grasshopper, Snake, Frog
(c) Grasshopper, Frog, Grass, Snake
(d) Grasshopper, Snake, Frog, Grass
Option a – Grass, Grasshopper, Frog, Snake
Which among the following statements regarding ecotone is/are correct?
(a) It is a transition area between two ecosystems or between two biological communities.
(b) Species diversity is greater in ecotone when compared with two adjacent zones.
(c) Grasslands, Delta, and Wetlands are examples of ecotone.
(d) All of the above
Option d – All of the above
Who among the following propounded the concept of ecological niche?
(a) Grinnel
(b) Darwin
(c) CC Park
(d) EP Adam
Option a – Grinnel
Which one of the following terms describes not only the physical space occupied by an organism but also its functional role in the community of organisms?
(a) Ecotone
(b) Ecological niche
(c) Habitat
(d) Home range
Option b – Ecological niche
The study of a single species and the environmental factors in its habitat is called
(a) Gynecology
(b) Synecology
(c) Autecology
(d) Ethology
Option c – Autecology
Which among the following statements is incorrect?
(a) Biome refers to large-scale areas of similar flora and fauna and climatic characteristics.
(b) An ecosystem is a set of organisms and abiotic components connected by the exchange of matter and energy.
(c) The ecological niche is a set of only biotic conditions in which a species is able to persist and maintain stable population sizes.
(d) The community consists of all the species living in a particular area.
Option c – The ecological niche is a set of only biotic conditions in which a species is able to persist and maintain stable population sizes
Consider the following statements. I. In a single habitat, there can be many niches that can sustain many organisms. II. Every species has its specialized niche. III. In an ecotone, there are few species that are specialized for that ecotone. Which among the statements given above is/are correct?
(a) Only I
(b) Only Ill
(c) Both I and II
(d) All of the above
Option d – All of the above
The cycling of elements in an ecosystem is called
(a) chemical cycle
(b) biogeochemical cycle
(c) geological cycle
(d) geochemical cycle
Option b – biogeochemical cycle
The flow of energy and nutrition in the biogeochemical cycle mainly took place through
(a) the Gaseous Cycle
(b) Sedimentary Cycle
(c) Both (a) and (b)
(d) None of the above
Option c – Both (a) and (b)
Fixation of Nitrogen implies
(a) the liquification of nitrogen.
(b) the conversion of atmospheric nitrogen into useful compounds.
(c) the conversion of nitrogen into amines.
(d) the solidification of nitrogen gas into the atmosphere.
Option b – the conversion of atmospheric nitrogen into useful compounds
The conversion of Ammonia (NH₂) to Nitrite (NO₂) and then to Nitrates (NO3) is called
(a) Nitrification
(b) Ammonification
(c) Assimilation
(d) Denitrification
Option a – Nitrification
The transitional zone between two distinct communities is known as
(a) Ecotype
(b) Arcade
(c) Ecosphere
(d) Ecotone
Option d – Ecotone
In an ecotone, the species which become abundant are called ( Environment and Ecology Test Series )
(a) edge species
(b) keystone species
(c) endemic species
(d) foster species
Option a – edge species
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