Ecosystem MCQs with Answers

The following is an example of an abiotic part of an ecosystem?

• A.Minerals
• B.Plants
• C.Animals
• D.Bacteria

refers to the diversity within a particular area or ecosystem, and is usually expressed by the number of species.

• A.Delta diversity
• B.Beta diversity
• C.Gamma diversity
• D.Alpha diversity

What percent of total energy of detritus ecosystem comes from root death?

• A.5%
• B.10%
• C.20%
• D.25%

Which is a tertiary consumer that eats the mouse (the primary consumer) and the cat (the secondary consumer)?

• A.Wolf
• B.Snake
• C.Hawk
• D.Grasshopper

_ are wetland areas often dominated by grasses and reeds.

• A.Marshes
• B.Swamps
• C.Bogs
• D.Fens

Cutting down of important plantations is known as ?

• A.Afforestation
• B.Deforestation
• C.Reforestation
• D.Horticulture

Past Paper MCQ

A plant species is most likely to become invasive when introduced to a new area if it _?

• A.Has become invasive in other places where it has been introduced
• B.Is a slow-growing perennial species
• C.Requires highly specific soil and climate conditions
• D.Has a narrow range of tolerance to environmental stress

Which one of the following is not an abiotic component of environment?

• A.Water
• B.Soil
• C.Animal
• D.Air

An animal or plant not in existence today is called ?

• A.Endangered
• B.Extinct
• C.Vulnerable
• D.Threatened

Bacteria growing on raw sewage use most of the oxygen from water. What will happen to fish living in that water?

• A.They will grow larger
• B.They will die of suffocation
• C.They will migrate to deeper water
• D.They will become more active