Ecological Interactions Review

Lichens in a forest ecosystem are made up of fungi and algae living together. The fungi benefit from food produced by the algae. The algae benefit from nutrients and water absorbed by the fungi. Which of the following relationships in different ecosystems is most similar to the interaction of the fungi and algae?

• mutualism between fungi and ants

• parasitism between fungi and humans

• commensalism between birds and trees

• competition between algae and aquatic plants

Tags

NGSS.MS-LS2-2

Remoras are small fish that attach to sharks but do not harm them. When sharks tear prey apart, remoras eat the leftovers. What relationship do remoras have with sharks?

• mutualism

• parasitism

• predator-prey

• commensalism

Honeybees are important pollinators of flowers. Mites that live in the bodies of bees can attack honeybee colonies. Some birds, amphibians, and insects eat honeybees. Which of the following relationships is not included in the description above?

• parasitism

• mutualism

• commensalism

• predator-prey

Tags

NGSS.MS-LS2-2

In a relationship between two organisms, sometimes one organism is predator and the other is prey. Which of the following is the best description of prey?

• An organism that another organism benefits from.

• An organism that eats

  another organism

• An organism that is eaten by another organism

• An organism that is harmed by another organism.

Small birds called Egyptian plovers sometimes get their food by picking it off the hides of crocodiles. For this reason, they are also known as crocodile birds. Which kind of relationship do crocodiles and Egyptian plovers have?

• predator-prey

• commensalism

• parasitism

• mutualism

Tags

NGSS.MS-LS2-2

What causes competition among organisms?

• One organism tries to live on or in the other organism.

• Both organisms attempt to

  use the same limited resources.

• Both organisms try to take

  on the form of the other.

• One organism tries to prey

  on the other organism.

Tags

NGSS.MS-LS2-1

Which of the following describes the relationship between a hermit crab and the organism that used to live in the shell the hermit crab now lives in?

• mutualism

• commensalism

• parasitism

• competition

Which of the following is an example of a predator-prey relationship?

• A fox is a predator, and a

  bear is its prey.

• A mouse is a predator, and a fox is its prey.

• A plant is a predator, and a

  fox is its prey.

• A fox is a predator, and a

  rabbit is its prey.

Which of these statements shows that hermit crabs and anemones have a relationship of mutualism?

• Hermit crabs and anemones live in the same ecosystem and can eat similar organisms.

• Anemones can move on their own by using their tentacles and pedal disk. The pedal disk is on the side of the anemone that is opposite its mouth.

• Anemones cannot move very quickly, but they can sting predators. When an anemone is riding on a hermit crab’s back, the anemone protects the crab from predators

• When hermit crabs grow too big for a shell, they leave it behind and move to a larger shell. If an anemone has attached itself to the old shell, the hermit crab will move the anemone to its new shell.

Tags

NGSS.MS-LS2-2

Hummingbirds share a mutualistic relationship with the flowers they feed on. Which of these statements about the symbiotic relationship between the flower and the hummingbird is true?

• Both the flower and the hummingbird are helped.

• Both the flower and the hummingbird are harmed.

• The flower is harmed, and the hummingbird is helped.

• The flower is helped, and the hummingbird is harmed.

Tags

NGSS.MS-LS2-2