50+ NEET MCQ Questions: Ecosystem with Solutions

Here we will provide you the 50+ MCQ Questions of Ecosystem for NEET-UG. Ecosystem  is the second chapter in Class XII or Class 12 Biology NCERT Unit  Ecosystem NEET (conducted by NTA) is based on the NCERT book.

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These 50+ MCQ questions are selected by the experts of studyrate.in, and these are more difficult questions, which will help you to better understand Ecosystem  NEET MCQ Questions with Answers.

Organisms and Populations NEET MCQ


The concept of the “ecological footprint” is used to measure:
a) The amount of energy that is transferred between trophic levels
b) The amount of water that is consumed by an ecosystem
c) The impact of human activities on the environment
d) The number of species present in an ecosystem

Answer:Answer: c) The impact of human activities on the environment


The process of denitrification is carried out by:
a) Nitrogen-fixing bacteria
b) Nitrifying bacteria
c) Denitrifying bacteria
d) None of the above

Answer: Answer: c) Denitrifying bacteria


Which of the following is an example of an ecosystem service?
a) Timber production
b) Water purification
c) Soil erosion
d) None of the above

Answer: Answer: b) Water purification


The primary factor that determines the type of vegetation in a terrestrial ecosystem is:
a) Temperature
b) Precipitation
c) Soil type
d) Altitude

Answer: Answer: b) Precipitation


Which of the following is an example of a keystone species?
a) Rabbit
b) Deer
c) Beaver
d) All of the above

Answer: AAnswer: c) Beaver


Which of the following is a measure of the total amount of organic matter in an ecosystem?
a) Gross primary productivity
b) Net primary productivity
c) Secondary productivity
d) Biomass

Answer: Answer: d) Biomass


The process of eutrophication can lead to:
a) Increased oxygen levels in aquatic ecosystems
b) Increased biodiversity in aquatic ecosystems
c) Harmful algal blooms in aquatic ecosystems
d) None of the above

Answer: Answer: c) Harmful algal blooms in aquatic ecosystems


Which of the following is an example of a top-down control on an ecosystem?
a) Predator-prey interactions
b) Nutrient cycling
c) Climate change
d) None of the above

Answer: Answer: a) Predator-prey interactions


The process of nitrogen fixation is carried out by:
a) Denitrifying bacteria
b) Nitrogen-fixing bacteria
c) Nitrifying bacteria
d) None of the above

Answer: Answer: b) Nitrogen-fixing bacteria


Which of the following is a measure of the amount of energy that is available to organisms at a particular trophic level?
a) Gross primary productivity
b) Net primary productivity
c) Biomass
d) Ecological efficiency

Answer: Answer: d) Ecological efficiency



The concept of the “ecological footprint” is used to measure:
a) The amount of energy that is transferred between trophic levels
b) The amount of water that is consumed by an ecosystem
c) The impact of human activities on the environment
d) The number of species present in an ecosystem

Answer: AAnswer: c) The impact of human activities on the environment


The process of denitrification is carried out by:
a) Nitrogen-fixing bacteria
b) Nitrifying bacteria
c) Denitrifying bacteria
d) None of the above

Answer: Answer: c) Denitrifying bacteria


Which of the following is an example of an ecosystem service?
a) Timber production
b) Water purification
c) Soil erosion
d) None of the above

Answer: Answer: b) Water purification


The primary factor that determines the type of vegetation in a terrestrial ecosystem is:
a) Temperature
b) Precipitation
c) Soil type
d) Altitude

Answer: Answer: b) Precipitation


Which of the following is an example of a keystone species?
a) Rabbit
b) Deer
c) Beaver
d) All of the above

Answer: Answer: c) Beaver


Which of the following is a measure of the total amount of organic matter in an ecosystem?
a) Gross primary productivity
b) Net primary productivity
c) Secondary productivity
d) Biomass

Answer: Answer: d) Biomass


The process of eutrophication can lead to:
a) Increased oxygen levels in aquatic ecosystems
b) Increased biodiversity in aquatic ecosystems
c) Harmful algal blooms in aquatic ecosystems
d) None of the above

Answer:Answer: c) Harmful algal blooms in aquatic ecosystems


Which of the following is an example of a top-down control on an ecosystem?
a) Predator-prey interactions
b) Nutrient cycling
c) Climate change
d) None of the above
x

Answer: Answer: c) Harmful algal blooms in aquatic ecosystems


The process of nitrogen fixation is carried out by:
a) Denitrifying bacteria
b) Nitrogen-fixing bacteria
c) Nitrifying bacteria
d) None of the above

Answer: Answer: b) Nitrogen-fixing bacteria


Which of the following is a measure of the amount of energy that is available to organisms at a particular trophic level?
a) Gross primary productivity
b) Net primary productivity
c) Biomass
d) Ecological efficiency

Answer: Answer: d) Ecological efficiency



Which of the following is an example of a pioneer species?
a) Grass
b) Deer
c) Bear
d) None of the above

Answer: AAnswer: a) Grass


Which of the following is an example of a secondary consumer in an ecosystem?
a) Herbivore
b) Carnivore
c) Omnivore
d) None of the above

Answer: Answer: b) Carnivore


The process of biological magnification can lead to:
a) Decreased levels of toxins in higher trophic levels
b) Increased levels of toxins in higher trophic levels
c) Decreased biodiversity in an ecosystem
d) None of the above

Answer: Answer: b) Increased levels of toxins in higher trophic levels


Which of the following is an example of a decomposer in an ecosystem?
a) Earthworm
b) Mushroom
c) Bacteria
d) All of the above

Answer: Answer: d) All of the above


The process of evapotranspiration is primarily driven by:
a) Solar energy
b) Wind energy
c) Geothermal energy
d) None of the above

Answer: Answer: a) Solar energy


Which of the following is a measure of the amount of water that is used by plants in an ecosystem?
a) Evapotranspiration
b) Runoff
c) Precipitation
d) None of the above

Answer: Answer: a) Evapotranspiration


The process of biomagnification can result in the accumulation of which of the following pollutants in the tissues of organisms at higher trophic levels?
a) Carbon dioxide
b) Oxygen
c) Mercury
d) None of the above

Answer: AAnswer: c) Mercury


Which of the following is an example of a natural disturbance in an ecosystem?
a) Forest fire
b) Logging
c) Urbanization
d) None of the above

Answer:Answer: a) Forest fire


Which of the following is an example of a biotic factor that can influence the distribution of organisms in an ecosystem?
a) Soil type
b) Temperature
c) Predator-prey interactions
d) None of the above

Answer: Answer: c) Predator-prey interactions


The process of acid rain can lead to:
a) Increased pH levels in aquatic ecosystems
b) Decreased pH levels in aquatic ecosystems
c) Increased biodiversity in an ecosystem
d) None of the above

Answer: Answer: b) Decreased pH levels in aquatic ecosystems



Which of the following is an example of a natural ecosystem?
a) A zoo
b) A park
c) A coral reef
d) A farm

Answer:Answer: c) A coral reef


Which of the following is an example of a keystone species?
a) A tree
b) A bird
c) A predator
d) A herbivore

Answer: AAnswer: c) A predator


The number of trophic levels in an ecosystem is limited by:
a) The amount of energy available
b) The amount of water available
c) The amount of oxygen available
d) The amount of nutrients available

Answer: AAnswer: a) The amount of energy available


Which of the following is an example of a non-renewable resource?
a) Wind energy
b) Solar energy
c) Fossil fuels
d) None of the above

Answer:Answer: c) Fossil fuels


Which of the following is an example of a positive feedback loop in an ecosystem?
a) Increased levels of carbon dioxide leading to increased plant growth
b) Increased levels of rainfall leading to decreased soil moisture
c) Increased levels of predators leading to decreased prey populations
d) None of the above

Answer: Answer: a) Increased levels of carbon dioxide leading to increased plant growth


Which of the following is an example of a biogeochemical cycle?
a) The water cycle
b) The carbon cycle
c) The nitrogen cycle
d) All of the above

Answer: Answer: d) All of the above


The process of eutrophication can lead to:
a) Increased levels of dissolved oxygen in aquatic ecosystems
b) Decreased levels of nutrients in aquatic ecosystems
c) Decreased biodiversity in aquatic ecosystems
d) None of the above

Answer: AAnswer: c) Decreased biodiversity in aquatic ecosystems


Which of the following is an example of an invasive species?
a) A native bird species
b) A non-native plant species
c) A predator
d) None of the above

Answer:Answer: b) A non-native plant species


Which of the following is an example of a biotic factor that can influence the productivity of an ecosystem?
a) Temperature
b) Water availability
c) Soil type
d) All of the above

Answer: Answer: d) All of the above


Which of the following is an example of a renewable resource?
a) Natural gas
b) Coal
c) Wind energy
d) None of the above

Answer: Answer: c) Wind energy


We hope there NEET MCQ of Class 12 Chapter 14  Ecosystem  will help you to score an excellent rank in NEET-UG. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.

Sneha

Master's in Biology, Skilled in vocational training. Strong Analytical and creative knowledge.

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