Interactions in Ecosystems (Background)

Interactions in Ecosystems (Background)

How do species affect other species?

Multiple Choice

An autotroph is an organism that can ...

• run fast to escape predators

• hide using camouflage

• eat only plants

• make its own food

Multiple Choice

A herbivore is ...

• a plant

• an animal that eats plants

• an animal that eats animals

• a plant that eats animals

Multiple Select

(Check all that apply) A carnivore is an organism that ...

• always hunts and kills prey to get its nutrients

• sometimes hunts and kills prey to get its nutrients

• sometimes eats plants to get its nutrients

• sometimes eats dead animals to get its nutrients

Multiple Choice

Which of these lists has only omnivores?

• fox, pig, bobcat

• raccoon, pig, bear

• fox, raccoon, deer

• bear, deer, human

Multiple Choice

Detritivores are organisms that eat dead organisms. Which of these is NOT a detritivore?

• buzzard

• raccoon

• roly-poly bug

• rattlesnake

Multiple Choice

Which animal here is the prey?

• lynx (cat)

• snowshoe hare (rabbit)

Multiple Choice

If I am helping my parents by mowing the grass, and they are helping me by paying me in cash, is that mutualism?

• yes, we both benefit

• no, I am not getting a benefit

• no, it is a relationship between different species

• no, they are not getting a benefit

Multiple Choice

If a tree has a bird nest in it, that must be mutualism.

• yes, they both benefit

• no, only the birds benefit

• sometimes; the birds don't stay in the nest all the time

• no, only the tree benefits

Multiple Choice

Grass burrs stick to animals' fur, then fall off, planting the seeds. Which relationship is this?

• commensalism

• mutualism

• parasitism

Multiple Choice

Bees travel to flowers, gathering nectar for themselves and spreading pollen to other flowers. Which relationship is this?

• commensalism

• mutualism

• parasitism

Multiple Choice

Bacteria invade human bodies, reproducing inside us and making us sick. What relationship is this?

• commensalism

• mutualism

• parasitism

Multiple Choice

Barnacles attach to whales' skin and get a free ride. The whales don't seem to care.

• commensalism

• mutualism

• parasitism