test 1

Question 1

What is Plant pathology?

Answer 1

The study of disease and suffering of plants.

Question 2

Annihilating Disease-

Answer 2

May whip out species completely

Question 3

Devastating Disease

Answer 3

May be severe for a few years then gradually subside.

Question 4

Limiting Disease

Answer 4

disease build up to the point that it is not economical to grow a crop in a given field.

Question 5

Debilitating Diseases

Answer 5

Occur almost annually and weaken crop, resulting in lower yields and poor quality.

Question 6

Disease

Answer 6

Any disturbance by a pathogen or environment that interferes with normal function of a plant. or abnormal functioning of an organism.

Question 7

What does a disease do?

Answer 7

injures and progressively gets worse over time.

Question 8

Injury

Answer 8

damage caused by transitory interaction with insect ,chemical or unfavorable environmental conditions.

Question 9

what two groups categorize disease?

Answer 9

1. Abiotic 2. Pathogenic

Question 10

abiotic diesease

Answer 10

non infectious, environmental. non infectious or physiological.

Question 11

Pathogonic DIsease

Answer 11

infectious diseases.

Question 12

Pathogen

Answer 12

A biological agent capable of causing an infectious disease.

Question 13

Disease triangle

Answer 13

Pathogen, host, Environment

Question 14

Vector

Answer 14

an organism capable of transmitting a pathogen.

Question 15

Infectious disease

Answer 15

can be spread from diseased plant to a healthy plant.

Question 16

Non-infectious Disease

Answer 16

cannot be transmited from a diseased plant to a healthy plant. caused by environmental factors.

Question 17

Symptom

Answer 17

Plants response to disease

Question 18

Sign

Answer 18

pathogen is visible (spores)

Question 19

PhytoPathology

Answer 19

study of plant disease.

Question 20

Injury

Answer 20

Damaged caused by transitory interaction with insects, chemical or unfavorable environmental condition.

Question 21

host

Answer 21

Plant attacked by pathogen.

Question 22

alternate host

Answer 22

one of the two kinds of plants on which a pathogen or parasite develops to complete its life cycle.

Question 23

symptom complex

Answer 23

complete series of symptoms that occur as a disease progresses.

Question 24

necrosis

Answer 24

death of plant tissue. brown,grey or black.

Question 25

hyperplasia

Answer 25

increase in cell number

Question 26

hypoplasia

Answer 26

decrease in cell number

Question 27

hypertrophy

Answer 27

increase in cell size

Question 28

hypotrophy

Answer 28

decrease in cell size

Question 29

parasite

Answer 29

an organism that obtains its nutrients wholly or in part from a host.

Question 30

parasitism

Answer 30

removal of food by

Question 31

pathogenicity

Answer 31

ability of a pathogen or parasite to interfere with one or more essential plant functions.

Question 32

obligate parasite(biotrophs)

Answer 32

organisms that can grow and reproduce only on/in living hosts.

Question 33

non-obligate parasite (necrotrophs)

Answer 33

can live on living or on dead hosts

Question 34

saprophyte

Answer 34

organism that can live on dead organic matter.

Question 35

facultative parasite

Answer 35

organism that is usually saprophytic but can become parasitic.

Question 36

facultative saprophyte

Answer 36

organism is usually parasitic but can become saprophyte.

Question 37

obligate saprophyte

Answer 37

lives only on dead organic matter, may act as secondary invader.

Question 38

how can we reduce the area of the disease triangle?

Answer 38

Use pest management practices.

Question 39

Using resistant cultivars reduces which side of trianlge?

Answer 39

host

Question 40

7 main categories of Symptoms (1-4)

Answer 40

1. Abnormal Coloration of host 2.Wilting of host 3.death of host tissue 4. Defoliation and fruit drop.

Question 41

7 main Categories of Symptoms( 5-7)

Answer 41

5. Abnormal growth increase 6.Stunting or Dwarfing of host 7.Replacement of host tissue

Question 42

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Answer 42

Blight

Question 43

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Answer 43

Canker

Question 44

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Answer 44

chlorosis

Question 45

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Answer 45

Dampering off

Question 46

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Answer 46

Dwarfing

Question 47

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Answer 47

Ear Rot

Question 48

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Answer 48

Epinasty

Question 49

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Answer 49

galls

Question 50

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Answer 50

interveinal chlorosis

Question 51

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Answer 51

leaf blotch

Question 52

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Answer 52

leaf spot

Question 53

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Answer 53

Mosaic

Question 54

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Answer 54

motteling

Question 55

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Answer 55

mummification

Question 56

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Answer 56

necrosis

Question 57

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Answer 57

scortch

Question 58

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Answer 58

Soft rot

Question 59

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Answer 59

stalk rot

Question 60

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Answer 60

vein clearing

Question 61

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Answer 61

witches broom

Question 62

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Answer 62

wilting

Question 63

Inoculum

Answer 63

any part of a pathogen that can initiate disease.