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WorksheetsCommunity Ecology
Total questions: 18
Worksheet time: 19mins
Name
Class
Date
1.
Primary succession is...
a)
When a hurricane causes a river to flood its banks
b)
When a farmer ploughs his fields to remove all existing plant life.
c)
When fire burns through a forest and ills all vegetation less than 1m tall.
d)
When increasing temperature causes a glacier to recede from an area of rocky ground
2.
The secondary succession is
a)
lichens and mosses arrive on bare rock and begin to trap soil
b)
a complex, stable ecosystem is formed
c)
plants grow in an area devastated by a flood
d)
plants grow in a newly formed pond
3.
A key stone species is...
a)
the top carnivore.
b)
has the largest population.
c)
has the most specialized niche.
d)
determines numbers and types of other species.
4.
A human & a Tape Worm: The tape worm gets a place to live in the intestines of the human and food from the human. The human loses weight and nutrients from the tape worm.
a)
Mutualism
b)
Commensalism
c)
Parasitism
5.
Bird & Tree: A bird builds a nest in a hole in the trunk of the tree. It is protected from the rain and predators. The tree is not harmed or helped by the bird.
a)
Mutualism
b)
Commensalism
c)
Parasitism
6.
What type of symbiosis? Hummingbirds feed on nectar from flowers. The flowers are pollinated by hummingbirds as they move from flower to flower.
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
7.
Starfish are probably the most important predator in the shallow ecosystem because they eat basically anything that they can come across. Their feeding activities control the whole ecosystem. This is an example of the starfish ___.
a)
habitat
b)
biotic factors
c)
tolerance level
d)
niche
8.
Tree kangaroos live in the upper branches of trees in the rainforests of Queensland, as well as on the island of New Guinea. This is an example of the tree kangaroos ___.
a)
niche
b)
habitat
c)
community
d)
population
9.
What is the name of an animal that is hunted and eaten by other animals?
a)
producer
b)
prey
c)
predator
d)
decomposer
10.
What is the order of succession shown in this figure?
a)
A, B, C, D
b)
B, A, D, C
c)
C, D, A, B
d)
D, A, B, C
11.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
ecological succession
c)
secondary succession
d)
intermediate
12.
What is the name given to lichen or algae after a primary succession?
a)
pioneer species
b)
volunteer species
c)
founder species
d)
conqueror species
13.
What is the difference between a primary vs. secondary succession?
a)
secondary occurs where there was no previous community
b)
they are the same
c)
secondary occurs in an area that was only partially destroyed
d)
primary ocurs in an area that was only partially destroyed
14.
What is the correct order from oldest (happened first) to youngest (happened last) in this pond succession?
a)
A, B, C, D
b)
D, C, B, A
c)
B, A, D, C
d)
C, D, A, B
15.
___ states that two species cannot exist together if they compete for the same resources. One will either die out or migrate, or they will adapt to separate resources.
a)
Hardy-Weinberg Principle
b)
Limiting Nutrient Principle
c)
Competitive Exclusion Principle
d)
Tolerance Principle
16.
The concept that herbivores can affect both the size and distribution of plants is known as
a)
predation
b)
commensalism
c)
herbivory
d)
keystone species
17.
The concept that predators can affect the size and distribution of other animals is known as
a)
predation
b)
herbivory
c)
tolerance
d)
limitation
18.
Starfish are considered ___ because if the species is negatively affected, it’s going to have a disproportionately greater effect on the whole ecosystem.
a)
a keystone species
b)
an invasive species
c)
an exotic species
d)
an introduced species
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