MDCAT Biology Ecosystem Test Online MCQs

MDCAT Biology Ecosystem Test

Get ready for your MDCAT Biology exam with this free online test on Ecosystems. This quiz includes important MCQs on topics like energy flow, biotic and abiotic components, food chains, and ecological balance designed according to the latest MDCAT syllabus.

MDCAT 2025 Ecosystem Test

Ecosystem MCQS Online Question with Answer

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1. Over-grazing may lead to ?

Desert

Grassland

Tundra

Taiga

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2. Primary succession that starts on a dry soil or rock is called ?

Lithosere

Xerosere

Hydrosere

Derosere

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3. Nutrient cycle are also called as ?

Biogeochemicla cycles

None of these

Geochemical cycles

Elemental cycles

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4. Succession begins by a few hardy invaders called ?

Pioneers

Openers

Successors

Leaders

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5. The type of association between two organisms which brings benefit to both the organisms is called ?

Mutualism

Predation

Commensalism

Parasitism

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6. A collection of related parts that function as a unit is called ?

System

Organ

Individual

Organism

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7. Primary succession that starts in a pond is called ?

Xerosere

Derosere

Hydrosere

Sammosere

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8. Major unit of ecology is ?

Ecosystem

Community

Biosphere

Population

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9. Actual place or location where an organism lives is called  its ?

Domain

Habitat

Terrain

Niche

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10. The animal that is caught and eaten away is called ?

Host

Predator

Victim

Prey

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