Plant Health

Question 1

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

Answer 1

Stressed

Question 2

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

Answer 2

The appropriate response process

Question 3

True or False

Information about a tree’s history and symptoms gained from a home owner can always be considered accurate.

Answer 3

False

Question 4

A common mistake in diagnosis is to carefully examine the above ground parts of the tree, while ignoring the __________________.

Roots

Leaves

Phloem

Xylem

Answer 4

Roots

Question 5

Mushrooms or Conks on a tree trunk would be examples of ____________________.

Signs

Signals

Symptoms

Answer 5

Signs

Question 6

True or False

Plant Health Care providers should identify short and long term stress factors and remediate them using appropriate management techniques.

Answer 6

True

Question 7

Releasing predators or parasites of an insect pest is an example of:

Biological control

Mechanical control

Cultural control

None of these

Chemical control

Answer 7

Biological control

Question 8

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

Answer 8

Quick

Question 9

True or False

Insect problems on a plant are often an indicator that the plant is already stressed by another problem.

Answer 9

True

Question 10

When possible, arborists should select species or varieties that are _________ to known insects or diseases.

None of these

Susceptible

Resistant

Prone

Answer 10

Resistant

Question 11

True or False

Pollution damage is often difficult to diagnose because the symptoms may mimic other problems such as insect injury and mineral deficiencies.

Answer 11

True

Question 12

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.

Answer 12

True

Question 13

True or False

Some insects are beneficial to the plants.

Answer 13

True

Question 14

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

Answer 14

Cultural control

Question 15

Insects that carry plant pathogens are said to be ____________________.

Borers

Predatory

Vectors

Naughty bugs

Answer 15

Vectors

Question 16

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.

Answer 16

False

Question 17

_________________________ pesticides are taken up by the plant and translocated throughout the branches and into the leaves.

Systemic

Contact

Biological

Cultural

Answer 17

Systemic

Question 18

True or False

Vascular diseases of trees are rarely fatal.

Answer 18

False

Question 19

A condition where a plant produces an abnormal cluster of dwarfed shoots is known as:

Gall

Allelopathy

Canker

Anthracnose

Witch’s broom

Answer 19

Witch’s broom

Question 20

Abnormally swollen plant tissue, which is often caused by insect or mite damage, is known as a ___________________.

Canker

Vector

Gall

Leaf Spot

Answer 20

Gall

Question 21

Extensive plantings of the same species, known as ___________________, can have catastrophic consequences if an uncontrollable problem is introduced.

Sample Populations

Allelopathy

Street Trees

Monocultures

Answer 21

Monocultures

Question 22

Spots of dead tissue on foliage that are fairly large and irregular in shape are known as _______________________.

Leaf Spots

Leaf Scorch

Leaf Blotch

Stunting

Answer 22

Leaf Blotch

Question 23

Discoloration of leaves and leaf drop are examples of _________________.

Signals

Symptoms

Signs

Answer 23

Symptoms

Question 24

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.

Answer 24

True

Question 25

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.

Answer 25

False

Question 26

True or False

Insecticidal soaps disrupt the cell membranes of soft bodied insects and are effective on some scales, aphids, mealybugs, and spider mites.

Answer 26

True

Question 27

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

Answer 27

Abiotic

Question 28

A _____________________is the causal agent of disease.

Vector

Pathogen

Canker

Gall

Answer 28

Pathogen

Question 29

Localized dead tissue that is often shrunken and discolored is known as a ____________.

Vector

Canker

Gall

Leaf spot

Answer 29

Canker

Question 30

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

Answer 30

Actions we take when caring for plants, such as planting, pruning, and fertilization

Question 31

Picking pests off of a plant by hand is an example of:

Cultural control

Chemical control

Biological control

Mechanical control

None of these

Answer 31

Mechanical control