Ecosystems and Interactions Between Organisms

Question 1

Give the different levels of organisation of an ecosystem.

Answer 1

• Individual - single organism
• Population - all organisms of a species in a habitat
• Community - all organisms of different species in a habitat
• Ecosystem - community of organisms along with all non-living (abiotic) conditions

Question 2

What is interdependence?

Answer 2

Organisms depending on each other for things such as food and shelter for survival and reproduction

Question 3

List some abiotic factors that affect communities.

Answer 3

• Temperature
• Amount of water
• Light intensity
• Levels of pollutants

Question 4

List some biotic factors that affect communities.

Answer 4

• Competition
• Predation