Interactions in Ecosystems

Overall, all the interactions between organisms in ecosystems...

• Keep ecosystems & populations unstable and random

• Keep ecosystems & populations stable and balanced

In which type of interaction does one animal eat another for energy and nutrients?

• Competition

• Parasitism

• Predation

• Mutualism

Which of the following is NOT a symbiotic relationship?

• Competition

• Commensalism

• Mutualism

• Parasitism

What term describes organisms striving for the same limited resources?

• Competition

• Predation

• Mutualism

• Commensalism

Tags

NGSS.MS-LS2-1

Commensalism is a symbiotic relationship in which what occurs between the organisms?

• both organisms are harmed

• one benefits, the other is unaffected

• one benefits, the other is harmed

• one benefits by eating the other

Tags

NGSS.MS-LS2-2

Fleas living within a mammal's fur describes this type of relationship:

• Competition

• Mutualism

• Predation

• Parasitism

Which interaction type is it when different male lions strive to find territories?

• Intraspecific Competition

• Interspecific Competition

• Commensalism

• Mutualism

A crab is protected from fish when an anemone rides on its shell. The anemone gets more food.

• Commensalism

• Competition

• Predation

• Mutualism

This interaction occurs when lions, cheetahs, and leopards all need the same food source.

• Intraspecific Competition

• Interspecific Competition

• Predation

• Mutualism

Orchid vines are skinny and grow on the trunk of trees to get more light and space with no negative effect.

• Mutualism

• Commensalism

• Parasitism

• Competition

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1