1
Q
What are plants sensitive to?
A
Light, moisture and gravity
2
Q
Where do shoots grow towards?
A
Light, against the force of gravity
3
Q
Where do roots grow towards?
A
Moisture, in the direction of the force of gravity
4
Q
Why do plants produce hormones?
A
To coordinate and control growth
5
Q
What’s the plant hormone that controls growth?
A
Auxin
6
Q
The responses of plant roots and shoots to light, gravity and moisture are the result of…
A
Unequal distribution of hormones, causing unequal growth rates
7
Q
How are plant growth hormones used in agriculture and horticulture?
A
Weed killers and rooting hormones
Biology Unit 1
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