Ecosystem MCQs with Answers

Temperature, pressure and light are types of ?

• A.Chemical barriers to dispersal
• B.Geographical barriers to dispersal
• C.Biological barriers to dispersal
• D.Physical barriers to dispersal

The grey Partridge has evolved in the _ grassland ecosystems.

• A.Tropical
• B.Desert
• C.Arctic
• D.Temperate

About what percentage of all species that have ever lived are now extinct?

• A.75%
• B.90%
• C.99.9%
• D.50%

Relationship between behaviour of a species and its environment is called as ?

• A.Eco-physiology
• B.Ethology
• C.Ecology
• D.Ecoethology

Denitrification to nitric oxide and nitrous oxide is accomplished by ?

• A.Pseudomonas
• B.Thiobacillus
• C.Both A and B
• D.None of these

The oxygen (O2) cycle is interconnected with which one of the following?

• A.Nitrogen cycle
• B.Carbon cycle
• C.Phosphorus cycle
• D.Sulfur cycle

The type/s of pollution is/are ?

• A.Air pollution
• B.Water pollution
• C.Land pollution
• D.All of these

All of the following are different steps in nitrogen cycle except?

• A.Nitrogen fixation
• B.Nitrification
• C.Calcification
• D.Denitrification

Low or no decomposition process takes place in which season?

• A.Summer
• B.Autumn
• C.Spring
• D.Winter

Past Paper MCQ

The tracking method which includes a predetermined walking pathway & recording of birds' observation is?

• A.Line Transect Method
• B.Point Count Method
• C.Mist Netting Method
• D.Radio Telemetry Method