Daily GS Foundation MCQs - SthaapnaEnvironment Previous Year QuestionsIAS Previous Year QuestionsStaapana - March 2019Sthaapana - March 2019 - Week 3

IAS Previous Year Environment Questions – Lecture – 1 – STHAAPNA Series

Which one of the following is the best description of the term ‘ecosystem’? [2015]

(a) A community of organisms interacting with one another.

(b) That part of the Earth which is inhabited by living organisms.

(c) A community of organisms together with the environment in which they live.

(d) The flora and fauna of a geographical area.


Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms? [2013]

(a) Ecotone

(b) Ecological niche

(c) Habitat

(d) Home range


The Millennium Ecosystem Assessment describes the following major categories of ecosystem services provisioning, supporting, regulating, preserving and cultural. Which one of the following is supporting service? [2012]

(a) Production of food and water

(b) Control of climate and disease

(c) Nutrient cycling and crop pollination

(d) Maintenance of diversity


Within biological communities, some species are important in determining the ability of a large number of other species to persist in the community. Such species are called _____ [2000]

(a) Keystone species

(b) Allopatric species

(c) Sympatric species

(d) Threatened species


Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity? [2013]

(a) Oceans, lakes, grasslands, mangroves

(b) Mangroves, oceans, grasslands, lakes

(c) Mangroves, grasslands, lakes, oceans

(d) Oceans, mangroves, lakes, grasslands

Related Articles