Exam 1

Question 1

Who is Norman E. Borlaug?

Answer 1

Won nobel peace prize
Father of the Green Revolution
Plant Breed and Pathologist
Dwarf and rust resistance
MAN WHO SAVE A MILLION LIVES

Question 2

Late Blight of Potato

Answer 2

Phytophthora
Caused Irish Potato Famine
1 million died, 2 million emigrated

Question 3

Founder of Plant Modern Pathology

Answer 3

Heinrich Anton deBary-> Phytophthora

Question 4

Chestnut Blight

Answer 4

Almost eliminated American Chesnut
Economically valuable tree:
1. rot resistant wood
2. nuts
3. stain
4. keystone species

Question 5

Ergot

Claviceps purpurea

Answer 5

Causes…
Hallucinations, fever, gangrene, cramps, aborted fetuses, induced labor.

Had spiritual impacts such as witch trials, and the revelations.

Rye is the most susceptible, as well as barley and oats.

Question 6

Disease def.

Answer 6

Any disturbance of a plant that interferes with its normal structure, function, or economic value.

Question 7

Symptoms

Answer 7

The external and internal reactions or alterations of a plant as the result of disease.

Question 8

Signs

Answer 8

Most important for diagnosis. The pathogen or its parts or products seen on a plant.

Question 9

damping-off (seedling blight)

Answer 9

Symptom. Rapid death and collapse of very young seedlings.

Question 10

root rot, necrosis

Answer 10

Symptom. The disintegration or decay of part or all parts of the root system.

Question 11

Necrosis

Answer 11

Symptom. Eats dead or dying tissue.

Question 12

Chlorosis

Answer 12

Symptom. Abnormal yellowing of leaves.

Question 13

Canker

Answer 13

Symptom. Localized necrotic lesions on a stem or fleshy organ, often sunken of a plant. This includes a volume of tissue.

Question 14

Witch’s Broom

Answer 14

Symptom. ?

Question 15

Scorch

Answer 15

Symptom. Burned appearance of leaves.

Question 16

Wilt

Answer 16

Symptom. Generalized loss of turgidity and drooping of leaves or shoots.

Question 17

Epinasty

Answer 17

Symptom. Abnormal down turning of leaves, and is incurable.

Question 18

Blight

Answer 18

Symptom. Rapid death?

Question 19

Phyllody

Answer 19

Symptom. Retrogression of flower organs back to leaves.

Question 20

Gall

Answer 20

Symptom. Enlarged portions of plant organs with uncontrolled cell division of tissue.

Question 21

Gray Mold

Answer 21

Sign

Question 22

Black Spot

Answer 22

Sign

Question 23

Rust

Answer 23

Sign. Usually rusty in color.

Question 24

Mistletoe

Answer 24

Sign.

Question 25

Disease Triangle

Answer 25

1. Environment 2. Pathogen 3. Host

middle is Disease.