PCS Unit 9 - Ecological Relationships

Base your answer(s) to the following question(s) on the key below and on your knowledge of biology.

A small shrimp feeds on parasites on the skin of a marine fish. Which set of symbols represents the relationship between the fish and the other two organisms? 

• + with shrimp; - with parasite

• - with shrimp; 0 with parasite

• 0 with shrimp; - with parasite

• + with shrimp; 0 with parasite

The wrasse, a small marine fish, periodically cleans harmful parasites from the mouth and body of the moray eel. The moray, in turn, protects the wrasse from larger predators and provides it with a constant supply of food. This is an example of the type of relationship known as

• mutualism

• parasitism

• commensalism

• saprophytism

All the cotton tail rabbits in a country would represent

• a community

• a biome

• a population

• an ecosystem

Which relationship is illustrated by a tapeworm living in the intestine of a human?

• commensalism

• predator-prey

• mutualism

• parasite-host

Which organism would most likely have a predator-prey relationship?

• tapeworm and dog

• barnacle and whale

• hawk and mouse

• rabbit and grass

A flea in the fur of a mouse benefits at the mouse's expense. This type of relationship is known as

• commensalism

• parasitism

• saprophytism

• mutualism

A relationship that describe a close interaction between two different species is known as what?

• Biodiversity
• Symbiosis
• Predation
• Emigration

Tags

NGSS.MS-LS2-2

This is known as a relationship in which one organism benefits, while the other is unaffected.

• Parasitism
• Mutualism
• Immigration
• Commensalism

Tags

NGSS.MS-LS2-2

A clownfish uses a sea anenome as a safe place to live. While living there, the clownfish lures in food for the anenome. This is an example of what type of relationship?

• Predator-Prey
• Commensalism
• Mutualism
• Parasitism

Tags

NGSS.MS-LS2-2

In a meadow ecosystem, a population of rabbits increases. What populations are most likely to increase as a result?

• foxes, hawks, and other predators of the rabbits

• leafy plants that rabbits eat

• rabbits that live elsewhere

• worms that live in the meadow soil

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4