WorksheetsSymbiosis and cycles
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
a relationship that occurs when two or more organims of the same species need the same resource at the same time
a)
competition
b)
symbiosis
c)
predation
2.
Barnacles create home sites by attaching themselves to whales. This relationship neither harms nor benefits the whales.
a)
parasitism
b)
commensalism
c)
mutualism
3.
Two male Giraffes are fighting over the last green leaf of a tree that is dying.
a)
Competition
b)
Mutualsim
c)
Predation
d)
Commensalism
e)
None of these
4.
When water vapor s cooled and forms droplets-
a)
Condensation
b)
Evaportation
c)
Transpiration
d)
Run-off
e)
None of these
5.
In the carbon cycle, producers take in the gas __
a)
carbon dioxide
b)
oxygen
c)
nitrogen
d)
carbon monoxide
e)
all of these
6.
How does the carbon in grass become part of a lion?
a)
The lion eats the grass
b)
Carbon from grass doesn't end up in a lion.
c)
The carbon ends up in the lion's food chain.
d)
The lion breathes in carbon given out by the plant
e)
None of these
7.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
e)
8.
How animals get the nitrogen they need
a)
from the air they breathe
b)
from the water they drink
c)
from the food they eat
d)
from the Sun
e)
None of these
9.
Bacteria fix nitrogen on plant roots. Plant roots provide sugar to bacteria. This is an example of
a)
mutualism
b)
parasitism
c)
commensalism
d)
competition
e)
none of these
10.
How nitrogen is "fixed" into useable form for plants
a)
only through action of bacteria
b)
only through lightning
c)
through action of bacteria & lightning
d)
through photosynthesis
100 %
