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WorksheetsChanges in the Eco
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
1. Any change in plant communities over time is called __________.
a)
succession
b)
pioneer species
c)
biotic stage
d)
abiotic stage
2.
A common pioneer organism in a succession is the __________.
a)
mushroom
b)
milkweed
c)
lichen
d)
grass
3.
The final stable state of a succession is called the __________ community.
a)
pioneer
b)
biotic
c)
common
d)
climax
4.
The first organism in a succession is called the __________.
a)
pilgrim species
b)
pioneer species
c)
climax species
d)
loner
5.
Starting on bare rock, what is the usual ecological succession of organisms?
a)
lichens - grasses - shrubs- trees
b)
grasses - shrubs - lichens - trees
c)
lichens- shrubs- grasses- trees
d)
shrubs - grasses - lichens - trees
6.
The process by which organic matter and nutrients slowly build up in a body of water.
a)
natural disaster
b)
eutrophication
c)
succession
d)
flooding
7.
Which of these processes happens slowly?
a)
eutrophication
b)
volcanic eruption
c)
forest fire
8.
Which disturbances to an ecosystem would be followed by secondary succession?
a)
glacier
b)
volcanic eruption
c)
meteor
d)
tornado
9.
The number and variety of species that are present in an area is referred to as
a)
primary succession
b)
biodiversity
c)
secondary succession
d)
biotic and abiotic
10.
With primary succession, there
a)
is no soil
b)
is soil
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