Types of Consumers
Food Chains
Energy Flow
Food Webs and Energy Pyramids
Effects on Populations and Food Webs
100
An organism that eats both plants and animals.
omnivore
100
This is always the source of energy for all food chains.
sun
100
Food chains and food webs show the flow of this.
energy
100
Maggots, Mushrooms, and Fungi are what?
decomposers
100
What happens if the starfish is removed from the food web?
The mussels take over the ecosystem.
200
An organism that eats only plants.
herbivore
200
This is always the first living member of a food chain.
producer
200
The arrows in a food chain always point to this organism.
Animal that is eating
200
What is at the bottom of an energy pyramid?
producers
200
Which organisms are primary consumers only?
Rabbit & Grasshopper
300
An organism that eats only animals.
carnivore
300
The first consumer in a food chain (which is an herbivore) is also called this.
primary consumer
300
The base of an energy pyramid is always this.
producer
300
Wolves , Bears , and Lions are what level?
tertiary consumers
300
What is two changes that would happen to this ecosystem's populations if most of the snakes were to die from disease?
1. The owl's population would get smaller (without as much food to eat).
2. The frog's population would get bigger (without as many predators.)
400
An organism that breaks down the dead and decaying remains of organisms.
decomposer
400
This is the third member of a food chain (usually an omnivore).
secondary consumer
400
The arrows in a food chain or food web show this.
flow of energy
400
Smallest level on a energy pyramid
tertiary level (top level)
400
What can you tell about this picture?
The arrows are pointing the wrong direction.
500
An organism that only eats things that are dead or that another organism has killed.
scavenger
500
This is the final member of a food chain BEFORE the decomposer.
top carnivore/Apex Carnivore/Tertiary Consumer
500
Can two consumers eat a producer in a food chain?
No
500
Largest level on a energy pyramid
producers (bottom level)
500
Based on the graph below, what likely caused the deer population to decline?
A growing wolf population (wolves eat deer for food).