Ecology Test

Some species of barnacles attach themselves to sea turtles or whales. As the whales or sea turtles travel, the barnacles gain access to food in nutrient-rich waters. Their host neither benefits nor is harmed by its riders.

• Mutualism

• Parasitism

• Commensalism

When a mosquito bites you, you are the __________ and the mosquito is the ____________.

• host, parasite

• parasite, host

Egrets sit on the buffalo's back and both benefit from each other. The Egret eats the insects that are sticking to the buffalo's skin and gets its food. The buffalo gets rid of germs and insects.

• parasitism

• commensalism

• mutualism

Which of the following best describes a mutualistic relationship?

• A flea feeding on a dog's blood

• Bees pollinating flowers so flowers can continue to live while the bees are collecting nectar

Egrets feed on the ticks found on a rhinoceros. The Egrets get a meal and the rhinoceros is helped by the removal of the ticks.

• parasitism

• commensalism

• mutualism

What is an example of commensalism?

• A clownfish living among the venomous tentacles of a sea anemone

• Barnacles attaching to a whale, where the barnacles benefit from transportation and the whale is neither harmed nor helped

• A lion eating a gazelle

Which scenario is an example of parasitism?

• A spider building a web on a tree

• A tapeworm living inside a cow and harming it

• An orchid growing on the branch of a tree without harming it

How does commensalism differ from mutualism?

• In commensalism, one organism benefits and the other is unaffected, while in mutualism, both organisms benefit.

• In commensalism, one organism is harmed and the other benefits, while in mutualism, both are unaffected.

Which of the following is an example of mutualism?

• Barnacles attaching to a whale.

• A clownfish living among a sea anemone

• A parasite living within a snail.

Which of the following best describes the level of organization where DIFFERENT species interact in a shared environment?

• Population

• Community

• species