Community Ecology (2024)

mutualism is when

• both organisms are positively impacted

• one organism is positively impacted and the other is harmed

• one organism is positively impacted and the other is unaffected

• both organisms are negatively impacted

predation is when

• both organisms are positively impacted

• both organisms are negatively affected

• one organism is positively impacted and the other is unaffected

• one organism feeds on another

competition is when

• two organisms must gain a portion of a shared limited resources

• one organism is positively impacted and the other is harmed

• one organism is positively impacted and the other is unaffected

• one organism feeds on another

Tags

NGSS.MS-LS2-1

Which of the following describes an ecological relationship in which two organisms must compete for a limited resource?

• predation

• commensalism

• competition

• mutualism

What is an example of symbiosis?

• A lion hunting a zebra

• Bull elk fighting over a herd of cows

• Two species competing for water

• A bee pollinating a flower

Tags

NGSS.MS-LS2-2

Which statement best describes parasitism?

• Both organisms benefit equally from the relationship

• The parasite benefits while the host is harmed

• The host benefits while the parasite is harmed

• Both organisms are harmed

What is commensalism in ecological relationships?

• A relationship where both organisms are harmed

• A relationship where one organism benefits and the other is unaffected

• A relationship where one organism is harmed and the other benefits

• A relationship where both organisms benefit

Barnacles attach themselves to a whale's skin. The barnacles gain a place to live and feed, while the whale is not significantly harmed or benefited. What type of ecological relationship is this?

• Mutualism

• Competition

• Parasitism

• Commensalism

Ticks feed on the blood of a deer, weakening the deer in the process. What type of ecological relationship does this describe?

• Predation

• Competition

• Commensalism

• Parasitism

Two species of birds compete for the same nesting sites in a forest. What type of ecological relationship is this?

• Commensalism

• Competition

• Predation

• Mutualism