Food Webs/Chains
Effects on an Ecosystem
Vocabulary
100
All food chains begin which a ______, which get their energy from the sun.
Producer
100
Name three things that producers need to make their own food:
Water, Sun, Air
100
In the food webs, what is the term for the organisms that get their energy from the sun?
Producers
200
Grass --> Insect --> Blue Jay --> Hawk
In the food chain above, what do the arrows represent?
The flow of energy
200
If a species of predators is removed from an environment, the population of prey animals will...
Increase
Decrease
Stay the same
Increase
200
In food webs, what is the terms of the organisms that get their energy by consuming other organisms?
Consumers
300
Grass --> Insect --> Blue Jay --> Hawk
In the food chain above, what would happen to the insect population if the grass dies?
The insect population would decrease. (Less insects)
300
If there is a drought, and the producers are not able to survive, would there be an effect on the wolf?
a. Yes, the wolf eats the producers
b. Yes, the wolf eats organisms that eat the producers
c. No, the wold doesn't eat the producers
d. No, the wolf does not eat organism that eat producers.
b. Yes, the wolf eats organisms that eat the producers
300
What is the term for organisms that get their energy from breaking down other organisms waste?
Decomposers
400
In the food web above, what 3 organisms eat the grass?
Rabbit, insect, slug.
400
If more snakes are introduced into the area, what would happen to the lizards?
The lizard population will decrease (less lizards)
400
Grass --> Insect --> Blue Jay --> Hawk
In the food chain above, the Blue Jay is a...
Consumer
500
If the maize crop has a great year of growth, which can you expect to happen
a. population increase in the locust
b. population decrease in the locust
A. Population increase in the locust
500
If the vole and the frog population decreased, what would happen to the thrush bird?
a. it would decrease because of hunting of the fox and hawk
b. it would increase because of hunting of the fox and bird
a. it would decrease because of hunting of the fox and hawk
500
Matter would not be available for reuse in an ecosystem if it were not for the activities of what organisms?
Decomposers