Living Things Relationship

Which symbols best describe mutualism?

• +,+

• +,0

• +,-

• -,0

Which symbols best describe parasitism?

• +,+

• +,0

• +,-

• -,0

Which symbols best describe commensalism?

• +,-

• +,+

• 0,0

• +,0

Remoras are small fish that swim close to or attach themselves to sharks. Remoras eat small scraps left as the sharks feed and the sharks are unaffected.

• Competition

• Mutualism

• Commensalism

• Parasitism

Clown fish live among anemones, acting as a lure for the sea anemone's prey. The clown fish gets protection and shelter from the anemone.

This is an example of which type of symbiosis?

• Mutualism

• Parasitism

• Commensalism

• Neutralism

Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds. Both species benefit.

• Commensalism

• Mutualism

• Parasitism

• Neutralism

Tick feeds on the blood of a mammal. This harms the mammal. This is an example of which type of symbiosis?

• Mutualism

• Commensalism

• Neutralism

• Parasitism

A coyote captures, kills, and eats deer. What type of relationship is this?

• Neutralism

• Competition

• Predation

• Symbiotic

Hummingbirds feed on nectar from flowers. The flowers are pollinated by hummingbirds as they move from flower to flower. What type of symbiosis is this?

• Mutualism

• Commensalism

• Parasitism

• Neutralism

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• Parasitism

• Commensalism

• Mutualism

• Neutralism