WorksheetsSubstrates Chapter5
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
What gas is produced by plant roots
a)
Carbon
b)
Oxygen
c)
Carbon dioxide
d)
Nitrogen
2.
In order from smallest to largest
a)
clay, sand, silt
b)
sand, silt, clay
c)
sand, nitrogen, tree
d)
clay, silt, sand
3.
What is one advantage of clay substrate?
a)
It is larger, so the water sticks easily
b)
It has a high nutrient capacity
c)
It makes carbon dioxide
d)
It produces more crops
4.
What is one advantage of using water as a substrate?
a)
it drowns the plant
b)
lacks gas exchange and support
c)
provides tree seeds
d)
provides nutrients and water
5.
Most crops have a production period of?
a)
1-4 months
b)
5-6 months
c)
4-5 months
d)
the whole year
6.
Advantages of sand?
a)
improves drainage
b)
constant watering required
c)
high water retention
d)
bad for gas exchange
7.
More surface area=?
a)
more fun
b)
more volume
c)
more nutrient holding capacity
d)
more water holding capacity
8.
Hydroponics uses what type of greenhouse table?
a)
hose
b)
active table
c)
ebb and flow
d)
rolling table
9.
What is material in which plants use to grow?
a)
root substrate
b)
soil
c)
substrate
d)
Earth
10.
How many choices for substrate have we talked about in class?
a)
10
b)
9
c)
5
d)
4
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