Everyday Science · Environment, Weather & Ecology · page 2 of 40

Ecosystem MCQs with Answers

Includes 43 past paper MCQs (marked).

Timed quizzes, instant results, track your progress — free

Practice these MCQs in the app

All Everyday Science chapters

Ecosystem, Biodiversity & Conservation MCQs (11–20)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

Answers and one-liners are hidden. Tap an option to check that question, or show all.

11.
Logging, farming, and cattle ranching cause _?
Correct Answer: A. Habitat destruction
One-liner
Logging, farming, and cattle ranching cause habitat destruction by clearing natural landscapes for human use.
12.
Species that have an extremely high impact on ecosystem relative to its population are called?
Correct Answer: D. Keystone species
One-liner
Species that have a disproportionately large impact on their ecosystem relative to their population size are called keystone species.
13.
Past Paper MCQ
What are animals that are no longer present on earth called?
Correct Answer: B. Extinct animals
One-liner
Animals that are no longer present on Earth are called extinct animals.
14.
Population size is usually determined on the basis of ?
Correct Answer: C. Density
One-liner
Population size is usually determined on the basis of density, which is the number of individuals per unit area or volume.
15.
The sum of species use of biotic and abiotic resources in its environment is called?
Correct Answer: C. Ecological niche
One-liner
The sum of a species' use of biotic and abiotic resources in its environment is called its ecological niche.
16.
Law of toleration was developed by ?
Correct Answer: A. V.E. Shelford
One-liner
The Law of Toleration was developed by V.E. Shelford.
17.
Change in habitat configuration and reduction in area is called?
Correct Answer: D. Habitat fragmentation
One-liner
Change in habitat configuration and reduction in area is called habitat fragmentation.
18.
The transfer of food material from producers through some organisms with repeated eating and being eaten is called?
Correct Answer: B. Food chain
One-liner
The linear transfer of food energy from producers through successive organisms by repeated eating and being eaten is called a food chain.
19.
Endangered Species Act was enacted by the US Congress in ?
Correct Answer: B. 1973
One-liner
The Endangered Species Act was enacted by the US Congress in 1973.
20.
Biodiversity is affected with _?
Correct Answer: D. All of these
One-liner
Biodiversity is affected by All of these — habitat loss, climate change, and pollution are all major threats that reduce species diversity worldwide.

Previous chapter: Greenhouse Effect and Global Warming Next chapter: Sustainable Development Goals (SDGs)

Ecosystem MCQs with Answers

Ecosystem, Biodiversity & Conservation MCQs (11–20)

Subjects

Exams

Platform

Legal