Table of Contents
Ecosystem MCQs
Preparing for the NEET exam can be tough, especially when it comes to understanding the ecosystem. The ecosystem is a crucial part of the NEET syllabus, and knowing it well can help you score better. In this section, we will focus on MCQ on Ecosystem for NEET, which will help you test and improve your knowledge.
An ecosystem includes all living things, like plants and animals, and their environment, where they interact. Understanding how energy flows through an ecosystem, how nutrients are cycled, and how different organisms are connected is essential for NEET.
We have prepared a series of MCQ on Ecosystem for NEET to help you study. These MCQs questions for NEET cover various aspects of the ecosystem, and each comes with answers to help you understand why the correct option is right. By practicing these ecosystem MCQ questions, you can reinforce what you have learned and identify areas where you need more practice.
Using these ecosystem MCQ questions and answers will help you get familiar with the type of questions asked in the NEET exam. These ecosystem MCQ questions are designed to be straightforward, making it easier for you to grasp the concepts.
Start practicing these MCQs on the ecosystem to improve your knowledge and get ready to do well in your NEET exam.
Ecosystem MCQs with Answers
Here are the most important 30 Ecosystem MCQ questions with answers:
What is an ecosystem?
- A. A community of living organisms interacting with their environment
- B. A type of climate
- C. A single species of plant
- D. A geological formation
Answer: A. A community of living organisms interacting with their environment
Which of the following is a biotic component of an ecosystem?
- A. Water
- B. Soil
- C. Plants
- D. Air
Answer: C. Plants
What is the primary source of energy for most ecosystems?
- A. Wind
- B. Sunlight
- C. Water
- D. Soil nutrients
Answer: B. Sunlight
Which process do plants use to convert sunlight into energy?
- A. Respiration
- B. Photosynthesis
- C. Fermentation
- D. Decomposition
Answer: B. Photosynthesis
What term describes the role of a species within its ecosystem?
- A. Habitat
- B. Niche
- C. Community
- D. Population
Answer: B. Niche
Which of the following is an example of a decomposer?
- A. Grass
- B. Rabbit
- C. Mushroom
- D. Hawk
Answer: C. Mushroom
What is biodiversity?
- A. The variety of life in a particular habitat
- B. The number of species in one ecosystem
- C. The genetic variation within a species
- D. All of the above
Answer: D. All of the above
Which of the following ecosystems is characterized by high rainfall and diverse species?
- A. Desert
- B. Tundra
- C. Rainforest
- D. Grassland
Answer: C. Rainforest
What is a food chain?
- A. A series of organisms each dependent on the next as a source of food
- B. A list of all organisms in an ecosystem
- C. A type of habitat
- D. A method of energy transfer
Answer: A. A series of organisms each dependent on the next as a source of food
Which of the following is a characteristic of a desert ecosystem?
- A. High humidity
- B. Abundant vegetation
- C. Low precipitation
- D. Constant temperatures
Answer: C. Low precipitation
What is an ecological pyramid?
- A. A graphical representation of energy flow in an ecosystem
- B. A type of food chain
- C. A measure of biodiversity
- D. A geological structure
Answer: A. A graphical representation of energy flow in an ecosystem
Which of the following is a primary consumer?
- A. Lion
- B. Deer
- C. Grass
- D. Eagle
Answer: B. Deer
What is the term for the maximum population size that an environment can sustain?
- A. Carrying capacity
- B. Ecosystem balance
- C. Population density
- D. Habitat limit
Answer: A. Carrying capacity
Which of the following is a characteristic of a tundra ecosystem?
- A. Warm temperatures year-round
- B. Permafrost
- C. High biodiversity
- D. Dense forests
Answer: B. Permafrost
Which of the following processes is crucial for nutrient cycling in an ecosystem?
- A. Photosynthesis
- B. Decomposition
- C. Respiration
- D. Evaporation
Answer: B. Decomposition
What is the primary purpose of a wetland ecosystem?
- A. To provide habitat for aquatic species
- B. To filter pollutants from water
- C. To store floodwaters
- D. All of the above
Answer: D. All of the above
Which of the following is a non-renewable resource?
- A. Solar energy
- B. Wind energy
- C. Coal
- D. Biomass
Answer: C. Coal
What is an invasive species?
- A. A native species that is endangered
- B. A species that is introduced to a new habitat and disrupts the ecosystem
- C. A species that is extinct
- D. A species that is beneficial to the ecosystem
Answer: B. A species that is introduced to a new habitat and disrupts the ecosystem
Which of the following is a consequence of deforestation?
- A. Increased biodiversity
- B. Habitat loss
- C. Improved air quality
- D. Enhanced soil fertility
Answer: B. Habitat loss
What is the main threat to coral reef ecosystems?
- A. Overfishing
- B. Pollution
- C. Climate change
- D. All of the above
Answer: D. All of the above
Which biome is characterized by seasonal rainfall and distinct wet and dry seasons?
- A. Tundra
- B. Desert
- C. Savanna
- D. Temperate forest
Answer: C. Savanna
What is the term for the gradual change in species composition in an ecosystem over time?
- A. Evolution
- B. Succession
- C. Adaptation
- D. Migration
Answer: B. Succession
Which of the following organisms is a keystone species?
- A. A common plant
- B. A predator that controls the population of other species
- C. A decomposer
- D. An invasive species
Answer: B. A predator that controls the population of other species
What is the role of producers in an ecosystem?
- A. To consume other organisms
- B. To decompose organic matter
- C. To convert solar energy into chemical energy
- D. To provide shelter
Answer: C. To convert solar energy into chemical energy
Which of the following is an example of a mutualistic relationship?
- A. A lion hunting a zebra
- B. Bees pollinating flowers
- C. A bird eating ticks off a cow
- D. A parasite living on a host
Answer: B. Bees pollinating flowers
What is the primary cause of climate change?
- A. Natural cycles
- B. Human activities, especially fossil fuel burning
- C. Solar radiation
- D. Volcanic eruptions
Answer: B. Human activities, especially fossil fuel burning
Which of the following is NOT a greenhouse gas?
- A. Carbon dioxide
- B. Methane
- C. Oxygen
- D. Nitrous oxide
Answer: C. Oxygen
What is the term for the variety of ecosystems in a given area?
- A. Species diversity
- B. Genetic diversity
- C. Ecosystem diversity
- D. Community diversity
Answer: C. Ecosystem diversity
Which of the following best describes a climax community?
- A. The initial stage of ecological succession
- B. A stable and mature ecological community
- C. An ecosystem undergoing rapid change
- D. A community with low biodiversity
Answer: B. A stable and mature ecological community
What is the primary function of wetlands in an ecosystem?
- A. To provide recreational activities
- B. To act as a buffer against floods
- C. To support terrestrial wildlife
- D. To serve as a source of fresh water
Answer: B. To act as a buffer against floods
