NEW
Font size
S
M
L
XL
WorksheetsPlant Growth Regulators (PGR)
Total questions: 13
Worksheet time: 7mins
Name
Class
Date
1.
PGR stands for?
a)
Plant growth response
b)
Plant growing regulator
c)
Plant growth regulator
d)
Plant grow relate
2.
____________ cause faster growth.
a)
Inhibitor
b)
Promoter
c)
Reducer
d)
Response
3.
Which tropism is a response to gravitational forces?
a)
Geotropism
b)
Gravitiytropsim
c)
Soiltropism
d)
Hydrotropism
4.
Which PGR is a natural growth inhibitor?
a)
Auxin
b)
Gibberellin
c)
Cytokinin
d)
Abscisic Acid
5.
Which tropism is a response to light?
a)
Lighttropism
b)
Phototropism
c)
Thigmotropism
d)
Hydrotropism
6.
Chemical messengers that are produced in the plant and control growth.
a)
Hormones
b)
Tropisms
c)
Compounds
d)
Sugars
7.
A water soluble gas that moves through the plant.
a)
Auxin
b)
Cytokinin
c)
Ethylene
d)
Gibberellin
8.
PGR that affects leaf aging and leaf drop.
a)
Auxin
b)
Cytokinin
c)
Gibberellin
d)
Ethylene
9.
PGR that stimulates stem growth, cell elongation and cell division.
a)
Gibberellin
b)
Abscisic Acid
c)
Auxin
d)
Ethylene
10.
PGR that controls tropisms, plant responses.
a)
Cytokinin
b)
Gibberellin
c)
Auxin
d)
Ethylene
11.
____________ reduce the growth of plants.
a)
Promoters
b)
Reducers
c)
Stoppers
d)
Inhibitors
12.
Plant growth regulators can be both ____________ and __________.
a)
Natural, synthetic
b)
Hard, soft
c)
Synthetic, helpful
d)
Inhibiting, dormant
13.
The image is a?
a)
Mass of leaves
b)
Witches broom
c)
Birds nest
d)
Gopher mound
Reset
