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Ecosystem NEET Questions and Answers

Ecosystem NEET Questions and Answers

Ecosystem NEET Questions and Answers

An ecosystem is a dynamic network of interactions between living organisms and their physical environment. It encompasses various biotic factors, such as plants, animals and microorganisms, and abiotic factors, including soil, water and climate. These interactions create a complex web of relationships where energy flows and nutrients cycle through different trophic levels.

Understanding ecosystems is important for NEET students, as it helps in comprehending ecological principles and the impact of human activities on the environment. Key concepts include energy transfer through food chains, the role of producers, consumers and decomposers, and the importance of biodiversity in maintaining ecological balance.

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Ecosystem NEET Questions and Answers

The topic of “Ecosystem” is fundamental in the NEET syllabus as it underpins many aspects of ecology and environmental science that are important for understanding biological interactions and processes. Ecosystems encompass the complex interactions between living organisms and their physical environment, including energy flow, nutrient cycling and species relationships. This understanding helps in grasping how organisms adapt to their surroundings and the impacts of environmental changes on biodiversity and ecosystem stability.

Ecosystem NEET Questions and Answers

Q1. A functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment is
A) biosphere
B) ecosystem
C) environment
D) None of these
Answer. B
Q2. The basic categories of ecosystem are
A) aquatic
B) terrestrial
C) Both (a) and (b)
D) grassland and crop field
Answer. C
Explanation: (c) The basic categories of ecosystem are aquatic and terrestrial. The terrestrial ecosystem could be forest, grassland, desert, etc. Whereas aquatic ecosystem are ponds, lake, sea, wetland, freshwater streams, estuaries, etc.
Q3. The term ecosystem was coined by
NEET 2016
A) AG Tansley
B) E Haeckel
C) E Warming
D) EP Odum
Answer. A
Q4. The two components of an ecosystem are
A) plants and animals
B) weeds, trees, animals and man
C) energy flow and mineral cycling
D) biotic and abiotic
Answer. D
Q5. Which of the following is an example of man-made ecosystem?
A) An island
B) Aquarium
C) Desert
D) Forest
Answer. B
Q6. Biotic components refer to
A) gases produced by industries
B) nutrient-deficient soil
C) living organisms
D) fossil fuels
Answer. C
Explanation: (c) The biotic components of an ecosystem refer to all living organisms like plants, animals and microbes, etc.
Q7. Stratification is more pronounced in
A) tropical rainforest
B) deciduous forest
C) temperate forest
D) tropical savannah
Answer. A
Explanation: (a) As stratification pattern change with latitude, it becomes more pronounced in tropical rainforest than temperate forests, deciduous forest or a savannah. This is probably due to the higher complexity of the vertical structure of tropical rainforests.
Q8. Which one of the following is not a functional unit of an ecosystem ?
CBSE-AIPMT 2012
A) Energy flow
B) Decomposition
C) Productivity
D) Stratification
Answer. D
Explanation: (d) Stratification represents the structural unit and is not the functional unit of ecosystem. Energy flow, productivity, decomposition and nutrient cycling are the functional unit of an ecosystem.
Q9. Maximum primary productivity of pond is achieved by
A) phytoplankton
B) zooplankton
C) floating nlants
D) red algae
Answer. A
Q10. Vertical distribution of different species occupying different levels in a biotic community is known as
CBSE-AIPMT 2015
A) divergence
B) stratification
C) zonation
D) pyramid
Answer. B
Explanation: (b) The vertical distribution of different species occupying different levels in a biotic community is known as stratification.
It is the formation of vertical layers where vegetation is dense, i.e. there are about 5-7 strata (layer) in the tropical rainforests with trees, occupy top vertical strata, shrubs (the second layer below tree), herbs and grass occupy the bottom layers.

Enhance your preparation with Arexiq’s Mock Test Series where we provide solutions to various MCQs like we provide in this post “Ecosystem NEET MCQ”. Our expert teachers explain the concepts thoroughly, making it easy for you to understand. We offer many types of questions ensuring a clear grasp of concepts.

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FAQs about Ecosystem

  1. What is an ecosystem?

Answer. An ecosystem is a community of living organisms (plants, animals, microbes) interacting with each other and their physical environment (air, water, soil) in a specific area. It includes both biotic (living) and abiotic (non-living) components.

  1. What are the main types of ecosystems?

Answer. The main types of ecosystems are terrestrial (e.g., forests, deserts, grasslands) and aquatic (e.g., freshwater, marine). Each type has its own unique set of organisms and environmental conditions.

  1. What is the role of producers in an ecosystem?

Answer. Producers or autotrophs, are organisms that make their own food through photosynthesis (e.g., plants) or chemosynthesis (e.g., certain bacteria). They form the base of the food chain and provide energy for other organisms.

  1. How do consumers differ from decomposers?

Answer. Consumers are organisms that obtain energy by eating other organisms (e.g., herbivores, carnivores). Decomposers break down dead organic matter and waste, recycling nutrients back into the ecosystem (e.g., fungi, bacteria).

  1. What is a food chain and how does it work?

Answer. A food chain is a sequence of organisms each dependent on the next as a source of food. It starts with producers and moves through various levels of consumers. Energy is transferred from one organism to the next in the chain.

  1. How does energy flow through an ecosystem?

Answer. Energy flows through an ecosystem in one direction, from producers to consumers and then to decomposers. Each level in the food chain loses energy as heat, so there is less energy available as you move up the chain.

  1. What is biodiversity and why is it important?

Answer. Biodiversity refers to the variety of life in a particular habitat or ecosystem. It is important because it ensures ecosystem resilience, provides resources for humans (like food and medicine) and supports ecosystem services such as pollination and water purification.

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