Symbiosis and Food Webs

Symbiosis and Food Webs

Symbiosis

a relationship between two organisms

Multiple Choice

I am a bat that lives in caves. At night, I fly around and locate moths to eat for nutrition.

• Commensalism

• Predation

• Mutualism

• Parasitism

Multiple Choice

Cleaner wrasse live in “cleaning stations” in a reef. They remove and eat parasites, dead tissue and mucous from reef fish, which helps reef fish stay healthy.

• Commensalism

• Mutualism

• Predation

• Parasitism

Multiple Choice

The cattle egret, a short bird found foraging in cattle herds, eats insects that have been disturbed when the cattle forage. It doesn’t affect the cattle, but the cattle egret depends on this food source.

• Commensalism

• Mutualism

• Parasitism

• Predation

Multiple Choice

Head lice live on small amounts of blood in the scalp. The host human feels itchiness in their hair as the lice bite and move around.

• Parasitism

• Predation

• Commensalism

• Mutualism

Food Webs

• Producers: autotrophs, perform photosynthesis

• Primary Consumers: heterotrophs, eat producers

• Secondary Consumers: heterotrophs, eat primary consumers

• Tertiary Consumers: heterotrophs, eat secondary consumers

• Decomposers: heterotrophs, break down dead organisms

Multiple Choice

What organism is a producer?

• Greenfly

• Plantain

• Rabbit

• Mouse

Multiple Choice

What organism is a primary consumer?

• Grasshopper

• Ladybird

• Dragonfly

• Frog

Multiple Select

Select two organisms that are competitors

• Mouse

• Rabbit

• Buzzard

• Frog

Multiple Choice

What will happen to the mouse population if the buzzard population increases?

• Mouse population will increase

• Mouse population will decrease

Multiple Choice

What will happen to the greenfly population if the butterfly population increases?

• Greenfly population will decrease

• Greenfly population will increase

Multiple Choice

Which types of organisms break down other organisms for food?

• Consumers

• Producers

• Decomposers

• Autotrophs