Name Student _____________________________________________
Weed Science, PLS 4601c Section 7644
and Grad. Prin. Of Weed Science AGR 6932 Section 9212
University of Florida - Davie
http://grove.ufl.edu/~turf/weedscience/
Philip Busey, [e-mail]
954-579-3932 (cell)
May 28, 2009
Quiz 4
1.
An herbicide that contains arsenic is:
a)
b)
Atrazine
c)
MSMA <<<<<<<<
d)
Triazine
e)
2.
Arsenal
Trimec
The fruit of the grass plant is a caryopsis because it is usually:
a)
b)
dry, one ovule, and fruit wall is fused to the mature ovule <<<<<<
c)
fleshy, many ovules, and fruit wall is fused to the mature ovule
d)
fleshy, one ovule, and fruit wall is fused to the mature ovule
e)
3.
dry, many ovules, and fruit wall is fused to the mature ovule
None of the above
Weeds in the Asteraceae family are:
a)
b)
grass weeds
c)
sedge weeds
d)
All of the above
e)
4.
broadleaf weeds <<<<<<<<
None of the above
Which is an example of the harm caused by weeds?
a)
Common ragweed induces hay fever in sensitive individuals
b)
Water lettuce, an aquatic weed, plugs up river highways in New
Guinea
c)
Weeds cause human deaths by obstructing visibility on highways
d)
All of the above <<<<<<<<
e)
None of the above
Weed Science Quiz 4 - Univ. Florida - Davie
5.
Knowing what you know about
sand, silt, and clay in the soil
triangle:
a)
a compacted clay soil can be
made to drain by adding 5%
sand
b)
a compacted clay soil can
be made to drain by proper
tilth <<<<<<<<
c)
a compacted clay soil cannot
be made to drain
d)
All of the above
e)
6.
Page 2
None of the above
A dispersal mechanism that is uniquely common in weeds that grow on walls
is:
a)
b)
Retrorse hairs that attach to fur
c)
Seeds the float on water
d)
Sensitivity to light and fluctuating temperature for germination
e)
7.
Exploding capsules <<<<<<<<
Spines
An organelle that does respiration:
a)
b)
mitochondrion <<<<<<<<
c)
nucleus
d)
ribosome
e)
8.
logarithm
None of the above
What family is the weed to the right:
a)
Asteraceae, the sunflower family
b)
Fabaceae, the pea family <<<<<<<<
c)
Poaceae, the grass family
d)
Rubicaceae, the coffee family
e)
None of the above
Weed Science Quiz 4 - Univ. Florida - Davie
9.
Weeds in Fabaceae the family are:
a)
broadleaf weeds <<<<<<<<
b)
grass weeds
c)
sedge weeds
d)
All of the above
e)
10.
None of the above
An organelle that does translation of messenger RNA to polypeptide
(precursor to protein):
a)
logarithm
b)
mitochondrion
c)
nucleus
d)
ribosome <<<<<<<<
e)
11.
None of the above
What can you say about the weed to the right:
a)
alternate leaves, parallel venation
b)
alternate leaves, reticulate (netted) venation
c)
opposite leaves, parallel venation
d)
opposite leaves, reticulate (netted)
venation <<<<<<<<
e)
12.
None of the above
Which weed does not easily fit within a category grass, sedge, or broadleaf
weed?
a)
Broomsedge (Andropogon virginicus)
b)
Bull paspalum (Paspalum setaceum)
c)
Common dayflower (Commelina communis) <<<<<<<<
d)
Creeping beggarweed (Desmodium incanum)
e)
13.
Page 3
Spanish needle (Bidens alba)
Which is an example of the useful properties of weeds?
a)
Common purslane is a weed that can be bought at some grocery
stores
b)
Weeds are a transgenic source of resistance for crops
c)
Weeds such as Madagascar periwinkle provide useful medicines
d)
All of the above <<<<<<<<
e)
None of the above
Weed Science Quiz 4 - Univ. Florida - Davie
14.
What family is the weed to the
right:
a)
Asteraceae, the
sunflower family
b)
Fabaceae, the pea family
c)
Poaceae, the grass
family
d)
Rubicaceae, the coffee
family <<<<<<<<
e)
15.
Page 4
None of the above
What is the significance of the illustration below (3 points):
a)
Timothy grows well in, or is associated with, a wide range of
heavy soils consisting of silt and clay <<<<<<<<
b)
Little bluestem grows well, or is associated with, in a narrow
range of sand soils <<<<<<<<
c)
Orchard grass grows well in, or is associated with, a moderate
range of intermediate or loamy soils <<<<<<<<
d)
(Also, timothy and
orchardgrass overlap
the range of soil
adaptation) <<<<<<<<
Weed Science Quiz 4 - Univ. Florida - Davie
16.
Page 5
Using the table of periodic elements below, what is the atomic weight of
ethanol (ethyl alcohol), C2H5OH ?
a)
6
b)
12
c)
46 <<<<<<<<
d)
78
e)
None of the above