Food Chains
Food Webs
Dichotomous Key
Changing Ecosystems
100
Is grass a producer or consumer?
Producer
100
What do the mice eat?
Grains
100
When using a dichotomous key always start at the:
a. Top
b. Middle
c. Side
a. Top
100
If there is less food for an organism to eat then will its numbers increase or decrease?
Decrease
200
Is a shark a producer or consumer?
Consumer
200
True/False: Nothing eats a fox.
True
200
Identify the mini-beast with legs, no wings and eight or more legs.
Spider
200
If there are less predators for an organism will its numbers increase or decrease?
Increase
300
Mushrooms, bacteria and fungus are examples of d__c___p___s .
decomposers
300
What are the two things an owl eats?
Mice & Grasshopper
300
Using the dichotomous key, what is the difference between a moth and butterfly?
Moth is active at night but a butterfly is not.
300
Predict what might happen if the carrots become extinct.
The rabbit numbers will decrease because they will have less food to eat.
400
How does a consumer get its energy?
From eating (consuming) things
400
Finish the food chain:
Carrot -> _______ -> Fox
Rabbit
400
Use the dichotomous key to describe a centipede.
The centipede has got legs, no wings and more than eight legs.
400
Predict what would happen if the owls and foxes became extinct.
If the foxes and owls became extinct then the number of rabbits, mice, grasshoppers and birds would increase because they have no predators. This might mean after a while though that the amount of grass, carrots and grains decrease in number.
500
How does a producer get its energy?
It creates its own energy from sun light.
500
Finish this food web.
________ -> Bird -> Fox
Grains
500
Identify the mini-beast with no legs and a shell.
Snail
500
An invasive vine that covers the ground is introduced to the ecosystem. The vine only lets the small grasshoppers eat the grass because the larger animals can't reach it. Predict what you think will happen to the ecosystem.
If the rabbits can't reach the grass then they will start to die off as they have less food. The grasshoppers will also increase in number because they have more food since they don't have to compete with anything else for it.