Ecosystem MCQs with Answers

Past Paper MCQ

Deforestation is primarily caused by?

• A.Urbanization
• B.Afforestation
• C.Reforestation
• D.None of these

A small area where large number of endangered and threatened species are found among endemic species is called?

• A.Biodiversity hot spot
• B.Ecological niche
• C.Biosphere reserve
• D.Wildlife sanctuary

The natural world that surrounds a living and non-living things is called?

• A.Environment
• B.Ecosystem
• C.Habitat
• D.Biosphere

Which species is naturally found only in a particular geographical area?

• A.Endemic species
• B.Endangered species
• C.Extinct species
• D.Exotic species

Reasons for rapid decline in wildlife are _?

• A.Habitat destruction
• B.Hunting and poaching
• C.Climate change and pollution
• D.All of these

According to Island Equilibrium model, rates of species extinction on islands depends on what factor/factors?

• A.Island size only
• B.Distance from mainland only
• C.Number of species present on the island only
• D.All of these

Green plants of an ecosystem are called _?

• A.Consumers
• B.Decomposers
• C.Producers
• D.Detritivores

The process of progressive and irreversible degradation of the biological community and soil cover is called?

• A.Salinization
• B.Deforestation
• C.Eutrophication
• D.Desertification

The study of the relationship between biotic and abiotic factors in environments is called?

• A.Ecology
• B.Genetics
• C.Physiology
• D.Embryology

Species living on are more vulnerable to extinction than living on _?

• A.Island, Continent
• B.Continent, Island
• C.Mountain, Plain
• D.Forest, Desert