Which scientist first coined the term, Ecosystem/Ecological System? [MTS Non technical and Havaldar Examination 2021]

__________ can be visualized as a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment. [Constable GD Examination 2022]

What is the process by which one organism captures and consumes another organism called?

[Junior Engineer 2024 Civil Paper I]

Which of the following is NOT an abiotic component of the eco system?
[Constable GD 2021]

Who among the following proposed the term ‘ecosystem’? [Combined Graduate Level Examination Tier I 2022]

Which of the following is not an environmental factor to regulate the rate of release of nutrients into the atmosphere? [Constable GD Examination 2022]

AG Tansley put forward the concept of ______ in 1935. [Constable GD 2021]

_______ are the producers and consumers of the earth’s resources. [Constable GD 2021]

In a food chain, ______ can be taken as the average value for the amount of organic matter that is present at each step and reaches the next level of consumers.

[Constable GD Examination 2022]

In Which year did Ernst Haeckel introduced the term ‘ecology’ to describe the economies of living forms? [SICPO Paper I 2023]

What is the trophic level of dead organic matter in detritus food chain? [Constable GD Examination 2022]

Which of the following is NOT a sustainable method of waste management?
[Constable GD 2021]

A specific place of an organism in the food chain is called as _____________. [Constable GD Examination 2022]

Excessive use of synthetic fertilizers leads to: [Constable GD Examination 2022]

The base of the ecological pyramid is usually broad and it narrows towards the _______. [Constable GD Examination 2022]

In the ecosystem, there can be multiple food chains, but only a limited number of trophic levels. Based on this statement which of the following is NOT true?
A: Each level in the food chain represents one trophic level
B: Organisms in the lowest trophic level have the highest population as a lot of energy is available for their survival
C: There is a loss of energy as it is being absorbed by organisms at the higher trophic level
D: Organisms at the highest trophic level make their own food and do not fully depend on the lower trophic organisms for energy. [Junior Engineer 2024 Civil Paper I]

Which ecologist is famous for studying plant life in the Indiana Dunes in 1896? [Combined Graduate Level Examination Tier I 2023]

Identify a dark-coloured amorphous substance that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate. [Combined Graduate Level Examination Tier I 2022]

Which of the following is a biotic component of ecology? [MTS Non technical and Havaldar Examination 2021]

One term for the continuous movement of water through the lithosphere, atmosphere and hydrosphere is: [SICPO Paper I 2024]

In 1869, who named a new term ‘Oecologie’that defined the study of the relationship of organisms with their environment? [CHSL 2021 Tier I]

A pyramid of biomass is a diagram that shows the population at each level of the food chain. Accordingly, ________ occupy the base with the highest biomass. [CHSL 2021 Tier I]

Which of the following is a man-made ecosystem? [Combined Graduate Level Examination Tier I 2024]

Where does hydrarch succession take place? [Constable GD Examination 2022]

The waste we generate is ______.
I. Biodegradable
II. Non-biodegradable [Constable GD Examination 2022]

वह कौन सा एकमात्र पारिस्थितिकी तंत्र है, जो सौर ऊर्जा पर नहीं पनपता है? [SICPO Paper I 2023]

In a particular trophic level, how is the standing crop measured? [Combined Graduate Level Examination Tier I 2023]

Identify a mobile source of food. [SICPO Paper I 2024]

Which cycle shows the movement of water?  [CHSL 2021 Tier I]

Which term refers to the increasing concentration of toxins within each successive link in the food chain? [Junior Engineer 2024 Electrical Paper I]

Select the second step of decomposition. [Constable GD Examination 2022]

Humus, a dark colored amorphous substance is formed as a result of which process? [Constable GD Examination 2022]

Three of the following four are ecological pyramids, and therefore form a group. Which is the one that does not belong to that group? [Constable GD Examination 2022]

Which of the following can degrade detritus into simpler inorganic substances? [SICPO Paper I 2023]

Identify an example of organisms that do NOT belong to the third trophic level. [Combined Graduate Level Examination Tier I 2022]

What is the set of ecosystem called? [Combined Graduate Level Examination Tier I 2022]

Identify an example of decomposers that are found in the bottom of a pond. [Combined Graduate Level Examination Tier I 2022]

Which of the following are the two basic categories of an ecosystem? [Combined Graduate Level Examination Tier I 2024]

Which ecologist’s research provided revolutionary new insights into how energy and nutrients move through the ecosystems? [CHSL 2021 Tier I]

Which level of the food chain includes millipede, springtails, woodlice, dung flies and slugs that feed on the dead or decaying plants or animals? [CHSL 2021 Tier I]

Phytoplankton, small sea-dwelling organisms, belong to which trophic level of the food web? [CHSL 2021 Tier I]

Which of the following groups of organisms help in keeping the environment clean?

[RRB NTPC CBT]

Who breaks down waste into smaller particles?

[SSC GD 2022]

What is the primary role of autotrophic organisms in an ecosystem?

[SSC MTS 2024]

The species that ______ a bare area are called pioneer species.

[SSC GD 2022]

What is the trophic level of dead organic matter in detritus food chain?

[SSC GD 2022]

In biological terms, _____ is a relationship between two organisms in which one organism benefits and the other is unaffected.

[SSC CGL 2019]

Identify an example of decomposers that are found in the bottom of a pond.

[SSC CGL 2022]

Which of the following options is correctly matched ?

[SSC CPO 2024]

The microorganisms which convert the dead plants and animals to humus are known as_____________ .

[SSC MTS 2022]