12.2 Animal and Plant Diseases

Question 1

What are the different plant diseases?

Answer 1

Ring rot, Tobacco mosaic virus, potato blight, black sigatoka

Question 2

What pathogen is ring rot caused by?

Answer 2

Bacteria

Question 3

What does ring rot occur in?

Answer 3

Potatoes, tomatoes

Question 4

What are the effects of ring rot?

Answer 4

Damages leaves, tubers and fruit. It can destroy up top 80% of crop

Question 5

What type of pathogen causes tobacco mosaic virus?

Answer 5

Virus

Question 6

What does tobacco mosaic virus occur in?

Answer 6

Tobacco plants, tomatoes, peppers, cucumbers

Question 7

What is the effect of tobacco mosaic virus?

Answer 7

Damages leaves, flowers and fruit. Stunts growth and reduces yield.

Question 8

What is the cure for ring rot?

Answer 8

No cure, once field is infected it cannot be used again to grow potatoes for two years

Question 9

What is the cure for tobacco mosaic virus?

Answer 9

No cure, but resistant crop strains are available

Question 10

What type of pathogen causes potato blight?

Answer 10

Fungus like protocista