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.
