Ecosystems Interactions

If a fox and an eagle eat some of the same organisms in an ecosystem, the relationship between the fox and the eagle could be classified as

• parasitism

• mutualism

• competition

• predatiom

Tags

NGSS.MS-LS2-2

A food web is illustrated. Which organisms in the food web compete for food?

• frog and insect

• owl and hawk

• rabbit and frog

• insect and owl

Koalas are herbivores that are native to Australia. Koalas live in trees and eat only the leaves of the eucalyptus tree. A group of koalas eats the leaves from eucalyptus trees faster than new leaves can grow back. Which of these is MOST likely to happen next?

• The koalas enter into hibernation until the eucalyptus leaves grow back.

• The koalas move to an area with more eucalyptus trees.

• The koalas store leaves in nests to eat later.

• The koalas begin eating leaves from other trees.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Tapeworms live in the intestines of dogs and absorb nutrients from food the dog eats. Which BEST describes the outcome of this relationship?

• The tapeworm helps the dog survive.

• The dog and tapeworm both become ill.

• The tapeworm and dog help each other survive.

• The dog becomes ill, and the tapeworm benefits.

Tags

NGSS.MS-LS2-2

Which interaction benefits both organisms?

• a flea living on a dog

• a mosquito biting a person

• a bee pollinating a flower

• a tapeworm living inside an animal

Clownfish take shelter in the tentacles of sea anemones and keep sea anemones clean. Which type of relationship does this represent?

• mutualism

• commensalism

• parasitism

• neutralism

Tags

NGSS.MS-LS2-2

Which interaction between animals BEST controls the population of a species?

• wild animals marking their territories

• remora fish traveling with sharks

• lions preying on zebras

• wolves traveling in packs

As the hawk population increases in an ecosystem, the deer mouse population will MOST likely decrease as a result of

• decrease in habitat

• decrease in food source

• increase in disease

• increase in predators

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is the ecological relationship between the mistletoe and the oak tree shown in the drawing?

• host--parasite

• predator--prey

• pioneer--climax

• producer--consumer

The shark and remora have a relationship that benefits the remora but neither helps nor harms the shark. What type of relationship is this?

• predation

• mutualism

• commensalism

• parasitism