WorksheetsEcosystems
Total questions: 23
Worksheet time: 45mins
Name
Class
Date
1.
Who is the scientist who had the idea of evolution by natural selection?
a)
Pierce
b)
Darwin
c)
Kettlewell
d)
Aristotle
2.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
3.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
4.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
5.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
6.
In the food web shown, the snail would be considered...
a)
primary consumer
b)
secondary consumer
c)
tertiary consumer
d)
producer
7.
How many primary consumers are there in this food web?
a)
1
b)
2
c)
3
d)
4
8.
How many herbivores are in this web?
a)
1
b)
2
c)
3
d)
4
9.
How are parasitism and predation similar?
a)
Both organisms are harmed.
b)
Both organism benefit.
c)
One organism benefits and the other is harmed.
d)
One organism benefits and the other is not harmed.
10.
Remoras are small fish that swim close to or attach themselves to sharks. Remoras eat small scraps left as the sharks feed and the sharks are unaffected. What kind of relationship is this?
a)
Competition
b)
Predation
c)
Mutualism
d)
Commensalism
11.
Clown fish live among anemones acting as a lure for the sea anemone’s prey. The clown fish gets protection and shelter from the anemone. What type of relationship is this?
a)
parasitism
b)
commensalism
c)
mutualism
d)
predatation
12.
Which of the following is NOT and example of how biotic factors interact with abiotic factors in an ecosystem?
a)
A lion preys on a herd of gazelle.
b)
Plants remove CO2 from the air.
c)
Animals cause erosion by digging.
d)
A lizard raises its body temperature by using heat from the sun.
13.
Which type of organism is found at the top of an energy pyramid representing an ecosystem?
a)
Consumer
b)
decomposer
c)
prey
d)
predator
14.
What is Natural Selection?
a)
A theory that the strong survive while the weak don’t
b)
Lamarcks Theory about animals
c)
The idea that past generations were better suited to environments than the modern generations
d)
Stronger animals die easier than weaker animals
15.
When an ecosystem evolves or changes from bare rock (no soil)
a)
primary succession
b)
secondary succession
c)
divergent evolution
d)
convergent evolution
16.
A series of changes that occur in an ecosystem after a disturbance
a)
secondary succession
b)
primary succession
c)
primary election
d)
secondary consumer
17.
Water with which of these conditions would cause the most competition for resources among all three species of fish?
a)
Very cold, very clear, and very fast
b)
very warm, very clear, and very slow
c)
mild temperatures, some suspended particles, flows very fast
d)
mild temperatures, some suspended particles, flows at medium speed
18.
Some students take care of a vegetable garden. When it is time to plant in the spring, the students leave part of the garden empty in order to observe ecological succession.Which of these will most likely occur first?
a)
trees
b)
bushes
c)
weeds and grasses
d)
small animals
19.
The dark form of the peppered moth survived the industrial revolution due to :
a)
the soot covered trees created camouflage
b)
being covered in soot
c)
the dark moths ate the light moths
d)
the dark moths laid fewer eggs than the light moths.
20.
What adaptation would BEST help an animal survive a much colder climate?
a)
changing coat color
b)
adding a thick layer of fat under the skin
c)
developing broad flat teeth
d)
becoming more sensitive to smells
21.
Base your answer(s) to the following question(s) on the diagram below that shows variations in the beaks of finches in the Galapagos Islands and on your knowledge of biology.
The diversity of species seen on the Galapagos Islands is mostly due to
The diversity of species seen on the Galapagos Islands is mostly due to
a)
gene manipulation by scientists
b)
gene changes resulting from mitotic cell division
c)
natural selection
d)
selective breeding
22.
What is the most damaging impact of humans on the marine ecosystem?
a)
Adding new vegetation
b)
polluting the water
c)
floating down the river
d)
adding new crustaceans
23.
A great fisherman has caught many fish at his local fishing hole. Lately he has had a hard time catching fish. Why is this most likely occurring?
a)
The fish are smarter than him.
b)
The population has decreased due to overfishing.
c)
the fish have become camouflaged
d)
the fish have migrated out of the area.
100 %
