Weed Ecology and Management Exam 1
Which of the following is a negative impact of weeds?
A. Allergies
B. Drying Wetlands
C. Reduced Crop Quality
D. All of These - D. All of These
Which of the following is a beneficial use of weeds?
A. Bioremediation
B. Forage
C. Human Food
D. All of These - D. All of These
One characteristics of an ideal annual weed is that they germinate for a short time.
True/False - False; the want to be able to germinate over a longer period of time in order to
extend the likelihood of Turing into a plant
A plant that exhibits environmental plasticity will produce the same amount of seed, regardless
of the environment.
True/False - False; it would be able to produce more seeds in some environments and less seeds
in others, the environmental effects will determine seed production
Which of the following is NOT a characteristics of an ideal perennial weed?
A. They are Deeply Rooted
B. They Rely Only on Vegetative Reproduction
C. They are Able to Store Large Amounts of Carbohydrates
, Weed Ecology and Management Exam 1
D. All of These are Characteristics of an Ideal Perennial Weed - B. They Rely Only on Vegetative
Reproduction (they use dual modes of reproduction)
Plant identification is a complex process that requires knowledge of many forms of plant
features.
True/False - True
Which of the following is an identifying feature of broadleaved weeds, but not grasses ?
A. Leaf Hairs
B. Ligules
C. Ochrea
D. Rhizomes - C. Ochrea
Which of the following can be described as pinnate?
A. Compound Leaves
B. Venation
C. Both A and B
D. Neither A nor B - C. Both A and B
A head infloresence may have only disc flowers.
True/False - True
When using a dichotomous key, you should always make sure your specimen matches the
description of the species you chose.
True/False - True
Which of the following is a negative impact of weeds?
A. Allergies
B. Drying Wetlands
C. Reduced Crop Quality
D. All of These - D. All of These
Which of the following is a beneficial use of weeds?
A. Bioremediation
B. Forage
C. Human Food
D. All of These - D. All of These
One characteristics of an ideal annual weed is that they germinate for a short time.
True/False - False; the want to be able to germinate over a longer period of time in order to
extend the likelihood of Turing into a plant
A plant that exhibits environmental plasticity will produce the same amount of seed, regardless
of the environment.
True/False - False; it would be able to produce more seeds in some environments and less seeds
in others, the environmental effects will determine seed production
Which of the following is NOT a characteristics of an ideal perennial weed?
A. They are Deeply Rooted
B. They Rely Only on Vegetative Reproduction
C. They are Able to Store Large Amounts of Carbohydrates
, Weed Ecology and Management Exam 1
D. All of These are Characteristics of an Ideal Perennial Weed - B. They Rely Only on Vegetative
Reproduction (they use dual modes of reproduction)
Plant identification is a complex process that requires knowledge of many forms of plant
features.
True/False - True
Which of the following is an identifying feature of broadleaved weeds, but not grasses ?
A. Leaf Hairs
B. Ligules
C. Ochrea
D. Rhizomes - C. Ochrea
Which of the following can be described as pinnate?
A. Compound Leaves
B. Venation
C. Both A and B
D. Neither A nor B - C. Both A and B
A head infloresence may have only disc flowers.
True/False - True
When using a dichotomous key, you should always make sure your specimen matches the
description of the species you chose.
True/False - True
