Ecology Lesson

Pseudoscorpions often hitch rides on the backs of large beetles or true bugs. What is the ecological relationship?

• Mutualism

• Commensalism

• Parasitism

• Competition

Tags

NGSS.MS-LS2-2

Ants protect soft bodied aphids and in return the aphids feed the ants a sugary drink. What is the ecological relationship?

• Cooperation

• Parasitism

• Commensalism

• Mutualism

In some grassland ecosystems, lions are predators that consume zebras. In several estuary ecosystems, fish lice are parasites that consume the blood of fish. How are these two relationships of predation and parasitism similar?

• Only one organism in each relationship

  dies.

• Both organisms in each relationship are

  harmed.

• Only one organism in each relationship benefits.

• Neither organism in each relationship is

  harmed.

Tags

NGSS.MS-LS2-2

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

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

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

A relationship in which one organism benefits and the other is unaffected.

• mutualism

• parisitism

• symbiosis

• commensalism

A consumer that hunts is called:

• A producer.

• An omnivore.

• A predator.

• A herbivore.

______________ occurs when more than one individual or population tries to use the same limited resource.

• Niche

• Predator-prey

• Availability

• Competition

Which of the following is true about competition?

• Controls population size

• Ensures everyone eats

• Keeps everyone happy

• Is only between 2 men