Ecosystem MCQs with Answers

A land where rainfall is lower than forest so it does not support growth of trees is called?

• A.Desert
• B.Wetland
• C.Tundra
• D.Grassland

An ecosystem consists of _?

• A.Only living organisms
• B.Only non-living components
• C.Biotic as well as abiotic components
• D.Only plants and animals

Higher diversity of wildlife represents _?

• A.Greater ecosystem stability
• B.Higher resilience to environmental changes
• C.Better ecological balance
• D.All of these

In Pakistan, there are only categories of protected area.

• A.2
• B.3
• C.4
• D.5

The food chain in which plant material is converted into dead organic matter is called as _?

• A.Grazing food chain
• B.Predator food chain
• C.Detritus food chain
• D.Parasitic food chain

Plants and the animal species which are in danger of extinction are called _?

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

Eury-haline animals are considered to be _?

• A.Narrow range of tolerance for salinity
• B.Broad range of tolerance for salinity
• C.No tolerance for salinity changes
• D.Tolerant only to freshwater

The insect, bacteria, small animals and fungi living in the soil feed on dead decaying bodies of plants and animals are called?

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

The culminating stage of plant succession in a given ecosystem is ?

• A.Pioneer community
• B.Climax community
• C.Seral community
• D.Transitional community

Past Paper MCQ

According to IUCN categories, which of the following is considered at lowest risk of extinction?

• A.Endangered
• B.Vulnerable
• C.Least concern
• D.Critically endangered