

Symbiosis and Food Webs
Presentation
•
Science
•
8th Grade
•
Practice Problem
•
Medium
Standards-aligned
Virginia Fourqurean
Used 393+ times
FREE Resource
3 Slides • 10 Questions
1
Symbiosis and Food Webs

2
Symbiosis
a relationship between two organisms
3
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
4
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
5
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
6
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
7
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
8
Multiple Choice
What organism is a producer?
Greenfly
Plantain
Rabbit
Mouse
9
Multiple Choice
What organism is a primary consumer?
Grasshopper
Ladybird
Dragonfly
Frog
10
Multiple Select
Select two organisms that are competitors
Mouse
Rabbit
Buzzard
Frog
11
Multiple Choice
What will happen to the mouse population if the buzzard population increases?
Mouse population will increase
Mouse population will decrease
12
Multiple Choice
What will happen to the greenfly population if the butterfly population increases?
Greenfly population will decrease
Greenfly population will increase
13
Multiple Choice
Which types of organisms break down other organisms for food?
Consumers
Producers
Decomposers
Autotrophs
Symbiosis and Food Webs

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