Ecosystem MCQs with Answers

A large regional community primarily determined by climate is called a:

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

Implementation of a restoration design is the step in ecological restoration.

• A.First
• B.Second
• C.Third
• D.Fourth

The concept of Minimum viable population is used in population viability analysis with the objective to _?

• A.Determine the maximum population an ecosystem can sustain
• B.Calculate the genetic diversity within a population
• C.Predict a population's chances for survival over a time interval
• D.Estimate the total number of species in a habitat

Animals which are at the risk of extinction in future are called?

• A.Vulnerable species
• B.Endangered species
• C.Extinct species
• D.Rare species

Environmental factors are also called as ?

• A.Climatic factors
• B.Abiotic factors
• C.Biotic factors
• D.Ecological factors

When oil and petrol spread over the water surface, which one of the following occurs?

• A.Water evaporates at a faster rate
• B.Water becomes more oxygenated
• C.Sunlight penetration increases due to reflection
• D.Sunlight penetration and oxygen mixing are prevented

High solubility of fertilizers also degrades ecosystem through _?

• A.Bioaccumulation
• B.Ozone depletion
• C.Acid rain
• D.Eutrophication

Past Paper MCQ

In an ecosystem, a rabbit is considered as?

• A.Decomposer
• B.Secondary consumer
• C.Producer
• D.Primary consumer

Study of relationship of organisms to their environment is called?

• A.Ecology
• B.Ethology
• C.Entomology
• D.Etiology

Which of the following statement is not true for an ecosystem?

• A.It is a functional unit of nature
• B.It involves interactions between living and non-living components
• C.Ecosystem does not exist independently
• D.It includes both biotic and abiotic factors