Plant Health Flashcards
If a tree is not well suited for the site in which it has been planted, it may become __________________, predisposing it to other problems.
Stressed
Resistant
Abiotic
Necrotic
Stressed
The process of gathering information, assessing the severity and implications of the problem, determining client expectations, and deciding on a course of action is called:
Integrated pest management
Plant Health Care
The appropriate response process
The cultural control mechanism
The appropriate response process
True or False
Information about a tree’s history and symptoms gained from a home owner can always be considered accurate.
False
A common mistake in diagnosis is to carefully examine the above ground parts of the tree, while ignoring the __________________.
Roots
Leaves
Phloem
Xylem
Roots
Mushrooms or Conks on a tree trunk would be examples of ____________________.
Signs
Signals
Symptoms
Signs
True or False
Plant Health Care providers should identify short and long term stress factors and remediate them using appropriate management techniques.
True
Releasing predators or parasites of an insect pest is an example of:
Biological control
Mechanical control
Cultural control
None of these
Chemical control
Biological control
If a plant, or part of a plant, has died with all of its leaves still attached, that indicates that the death was ________________.
Caused by improper care
Slow
Quick
Caused by insects
Quick
True or False
Insect problems on a plant are often an indicator that the plant is already stressed by another problem.
True
When possible, arborists should select species or varieties that are _________ to known insects or diseases.
None of these
Susceptible
Resistant
Prone
Resistant
True or False
Pollution damage is often difficult to diagnose because the symptoms may mimic other problems such as insect injury and mineral deficiencies.
True
True or False
Diseases that affect only the foliage of a tree may not be a serious problem unless defoliation occurs in several consecutive years.
True
True or False
Some insects are beneficial to the plants.
True
Landscape management practices that promote plant health or suppress pest populations are known as
Mechanical control
Biological control
Chemical control
Cultural control
None of these
Cultural control
Insects that carry plant pathogens are said to be ____________________.
Borers
Predatory
Vectors
Naughty bugs
Vectors
True or False
It is most likely that if you see multiple symptoms on a plant, that they are all caused by the same problem.
False
_________________________ pesticides are taken up by the plant and translocated throughout the branches and into the leaves.
Systemic
Contact
Biological
Cultural
Systemic
True or False
Vascular diseases of trees are rarely fatal.
False
A condition where a plant produces an abnormal cluster of dwarfed shoots is known as:
Gall
Allelopathy
Canker
Anthracnose
Witch’s broom
Witch’s broom
Abnormally swollen plant tissue, which is often caused by insect or mite damage, is known as a ___________________.
Canker
Vector
Gall
Leaf Spot
Gall
Extensive plantings of the same species, known as ___________________, can have catastrophic consequences if an uncontrollable problem is introduced.
Sample Populations
Allelopathy
Street Trees
Monocultures
Monocultures
Spots of dead tissue on foliage that are fairly large and irregular in shape are known as _______________________.
Leaf Spots
Leaf Scorch
Leaf Blotch
Stunting
Leaf Blotch
Discoloration of leaves and leaf drop are examples of _________________.
Signals
Symptoms
Signs
Symptoms
True or False
Pesticides often kill the targeted pest within minutes or hours of application, whereas biological control can take days or weeks to suppress a pest population.
True
True or false
It is not important to identify plants in order to diagnose the cause of symptoms that you might be seeing on the plant.
False
True or False
Insecticidal soaps disrupt the cell membranes of soft bodied insects and are effective on some scales, aphids, mealybugs, and spider mites.
True
The term that means a symptom on a plant is caused by something phyisical or environmental rather than something biological is __________________.
biotic
necrotic
abiotic
herbaceous
Abiotic
A _____________________is the causal agent of disease.
Vector
Pathogen
Canker
Gall
Pathogen
Localized dead tissue that is often shrunken and discolored is known as a ____________.
Vector
Canker
Gall
Leaf spot
Canker
Cultural practices are:
Techniques we use to make a plant feel like it is in its native habitat.
Ceremonial uses of plants.
The practice of grouping plants together that are from the same native habitat.
Actions we take when caring for plants, such as planting, pruning, and fertilization
Actions we take when caring for plants, such as planting, pruning, and fertilization
Picking pests off of a plant by hand is an example of:
Cultural control
Chemical control
Biological control
Mechanical control
None of these
Mechanical control
