Unit 4: Interaction Among Living Things

Interaction between living things is a _____.

The three types of interactions among animals include:

Competition among animals of the same species is known as _____. Competition among animals of different species is known as _____.

Intraspecies competition occurs when the sources of _____ are limited.

• Food

• Water

• Shelter or territory

• Mate

Interspecies competition occurs when the sources of _____ are limited.

• Food

• Water

• Shelter of territory

• Mate

The three types of symbiosis include:

Mutualism is an interaction that _____.

• Benefits one organism but does not harm nor benefit the other

• Benefits both organisms

• Benefits one organism and harms the other

Parasitism is an interaction that _____.

• Benefits one organism but does not harm nor benefit the other

• Benefits one organism and harms the other

• Benefits both organisms

Commensalism is an interaction that _____.

• Benefits both organisms

• Benefits one organism but does not harm nor benefit the other

• Benefits one organism and harms the other

The two types of interactions among plants include: