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Ecosystem Questions

Practice 38 Ecosystem questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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38
Total Questions
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13
Easy
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24
Medium
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1
Hard
Practice by Exam:Biology(32)Environmental Studies(2)General Awareness(1)General Science@NUM: 36(1)BIOLOGY(1)Geography(1)

About Ecosystem — practice questions, PYQs & concepts

Ecosystem is a frequently-tested topic on Biology, Environmental Studies, General Awareness. ExamTest.live currently lists 38 Ecosystem questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

Ecosystem weight in competitive exams

Across our Ecosystem question bank, the largest sources are Biology (32), Environmental Studies (2), General Awareness (1), General Science@NUM: 36 (1) and BIOLOGY (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 13 easy Ecosystem questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right — the explanation often surfaces a faster approach you can reuse.

All Ecosystem Questions(1–38 of 38)

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Q1mediummcqEnvironmental StudiesCompetitive Exam Practice Paper2026
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Which of the following types of pollution is cultural (accelerated) eutrophication?
Q2easymcqBiologyNEET (UG) 20172026
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Which ecosystem has the maximum biomass?
Q3mediummcqBiologyNEET (UG) 20172026
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Presence of plants arranged into well defined vertical layers depending on their height can be seen best in:
Q4mediummcqBiologyNEET 20192026
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Which of the following ecological pyramids is generally inverted?
Q5mediummcqGeographyCompetitive Exam Practice Paper2026
Sundarban was declared a 'World Heritage Site' primarily for its:
Q6easymcqBiologyNEET 20192026
The term ecosystem was coined by:
Q7easymcqBiologyNEET 20172026
Which ecosystem has the maximum biomass?
Q8easymcqBiologyNEET 20172026
Presence of plants arranged into well defined vertical layers depending on their height can be seen best in:
Q9mediummcqBiologyNEET (UG) 20182026
What type of ecological pyramid would be obtained with the following data?Secondary consumer : Primary consumer : Primary producer :
Q10easymcqBiologyNEET (UG) 20182026
Niche is:
Q11mediummcqBIOLOGYNEET 20192026
Identify the possible link A in the following food chain:Green plant Insect Frog A Eagle
Q12mediummcqBiologyNEET 2020 E12026
In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?
Q13mediummcqBiologyNEET 2020 E12026
Match the trophic levels with their correct species examples in grassland ecosystem.| Column - I | Column - II || :--- | :--- || (a) Fourth trophic level | (i) Crow || (b) Second trophic level | (ii) Vulture || (c) First trophic level | (iii) Rabbit || (d) Third trophic level | (iv) Grass |
Q14easymcqBiologyNEET 20212026
The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as:
Q15mediummcqGeneral AwarenessSSC CGL2026
Identify a mobile source of food.
Q16mediummcqGeneral Science@NUM: 36SSC CGL2026
Human Beings belong to which category of the ecosystem?
Q17mediummcqEnvironmental StudiesCompetitive Exams2026
In an area where DDT had been used extensively, the population of birds declined significantly because:
Q18mediummcqBiologyBiology
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Large Woody Vines are more commonly found in:
Q19mediummcqBiologyBiology
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Mass of living matter at a trophic level in an area at any time is called:
Q20mediummcqBiologyBiology
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Which of the following ecosystem types has the highest annual net primary productivity?
Q21mediummcqBiologyBiology
Identify the likely organisms (a), (b), (c) and (d) in the food web shown below:
image
Q22easymcqBiologyBiology
Which one of the following is not used for construction of ecological pyramids ?
Q23easymcqBiologyBiology
About of total global carbon is found in:
Q24easymcqBiologyBiology
The slow rate of decomposition of fallen logs in nature is primarily due to their:
Q25mediummcqBiologyBiology
Which two of the following statements concerning food chains are correct?(a) Removal of tigers results in increased vegetation growth.(b) Removal of most carnivores results in an increased deer population.(c) Food chains are generally limited to trophic levels due to energy loss.(d) Food chain length varies from to trophic levels.
Q26easymcqBiologyBiology
The biomass available for consumption by the herbivores and the decomposers is called:
Q27mediummcqBiologyBiology
Which one of the following is one of the characteristics of a biological community?
Q28easymcqBiologyBiology
A renewable exhaustible natural resource is:
Q29mediummcqBiologyBiology
Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?
Q30easymcqBiologyBiology
Which of the following would appear as the pioneer organisms on bare rocks?
Q31hardmcqBiologyBiology
The second stage of hydrosere is occupied by plants like:
Q32mediummcqBiologyBiology
The rate of formation of new organic matter by rabbit in a grassland, is called:
Q33easymcqBiologyBiology
Identify the possible line “A” in the following food chain:Plant insect frog “A” Eagle
Q34mediummcqBiologyBiology
In a terrestrial phosphorus cycle, what do the labels A, B, C, and D represent?
Q35mediummcqBiologyBiology
If of energy is trapped at the producer level, then how much energy will be available to the peacock in the following food chain?
Q36mediummcqBiologyBiology
During ecological succession:
Q37mediummcqBiologyBiology
A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called:
Q38mediummcqBiologyBiology
Which one of the following is a characteristic feature of cropland ecosystem?

Frequently Asked Questions

How many Ecosystem questions are on ExamTest.live?▼
We have 38 Ecosystem questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Ecosystem MCQs free?▼
Yes. All Ecosystem questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Ecosystem questions?▼
Ecosystem questions are commonly asked in Biology, Environmental Studies, General Awareness, General Science@NUM: 36, BIOLOGY. You can filter by exam using the links above.
How do I practice Ecosystem questions effectively?▼
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.