WorksheetsScience Boot Camp - Food Chains/Webs, Ecosystem Changes
Total questions: 24
Worksheet time: 46mins
Name
Class
Date
1.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
2.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
3.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
4.
How many herbivores are in this web?
a)
1
b)
2
c)
3
d)
4
5.
The owl receives energy from which organisms?
a)
grasshopper and mouse
b)
mouse and rabbit
c)
rabbit and butterfly
d)
butterfly and frog
6.
How many predators does the squid have?
a)
1
b)
2
c)
3
d)
4
7.
Which one is NOT an example of a decomposer?
a)
mushroom
b)
leaves
c)
mold
d)
worm
8.
The way energy is passed from one organism to another
a)
food chain
b)
energy
c)
extinct
d)
habitat
9.
What four things do every organism need for survival?
a)
food, water, dirt, and a hat
b)
shelter, water, food, and air
c)
air, sun, dirt, and water
d)
light, electricity, and worms
10.
If a frog is the prey, what could be the predator?
a)
Grass
b)
Insect
c)
Snake
d)
Snail
11.
How would beavers building a dam cause an increase in the fish population? The dam
a)
blocks a river and creates a lake.
b)
causes
predators to hunt more fish.
c)
forces
many birds to leave the ecosystem.
d)
removes
trees from around the river.
12.
If humans cleared a forest to build homes, we would expect _____________.
a)
fewer
tree-dwelling animals
b)
increased insect populations
c)
more development of soil
d)
more
frequent thunderstorms
13.
Which of the following would have a negative impact on an ecosystem
a)
constructing highways
b)
planting trees
c)
recycling paper
14.
How does a bird "change its environment" to meet its NEEDS?
a)
builds a nest
b)
flies around
c)
catches bugs
d)
looks for something to eat
15.
What would cause a decrease in the rabbit population?
a)
An increase in grass growing
b)
A decrease in caterpillars
c)
An increase in owls
d)
An increase in foxes
16.
Natural disasters can also change ecosystems. What can organisms do if a disaster happens?
a)
Fight, Survive, Struggle
b)
Move, Adapt, Die
c)
Stay, Sleep, Survive
d)
Eat, Sleep, Repeat
17.
The removal of trees and plants can cause problems such as soil erosion.
a)
True
b)
False
18.
An example of a natural change to the ecosystem is:
a)
A highway built in the middle of the desert.
b)
Lightening strikes and starts a fire in the forest.
c)
A rancher placing too many grazers in a small area leading to overgrazing.
19.
If the population of prey increases, the population of predators will ________because of the availability of food.
a)
decrease
b)
stay the same
c)
increase
20.
Field mice eat corn. Which would most likely happen if the field mouse population grew?
a)
There would be more corn to feed the field mice.
b)
There would be less corn due to the mice eating it.
c)
The habitat would get overpopulated because the mice woudl eat too much.
21.
What would most likely happen if plant life was removed from a pond ecosystem?
a)
The level of the water in the pond would increase.
b)
The number of fish would decrease due to reduced oxygen.
c)
The amount of sunlight reaching the bottom would decrease.
d)
The number of fish would increase due to an increase in oxygen.
22.
Humans are part of the ecosystem and therefore impact it. Which of the following events in an ecosystem may produce a negative effect?
a)
preventing deer from depleting food resources
b)
a lumber company clearing a forest
c)
wildlife rangers minimizing disturbances
23.
What is Competition?
a)
When two or more organisms depending on different resources to survive.
b)
When and organism eats another organism to live.
c)
The role an organism plays in its environment.
d)
Two or more organisms depend on the same resource.
24.
Two students built an Aquarium. They placed gravel on the bottom and added water. They placed aquatic plants in the gravel and added fish. The students made a small...
a)
Organism
b)
Life cycle
c)
Ecosystem
d)
Terrarium
100 %
