Worksheets9-1 Plant disease
Total questions: 10
Worksheet time: 6mins
Rose black spot is caused by what type of pathogen?
Fungus
Bacteria
Virus
Nematode
Potato cysts are caused by what type of pathogen?
Virus
Bacteria
Fungus
Nematode
The discoloroation of tobacco mosaic is caused by what type of pathogen?
(a)
A deficinecy in which ion causes less chlorophyll to be produced in leaves?
(a)
Nitrate deficiency causes which of the following symptoms?
Leaf decolouration
Stunted growth
Decrease in chlorophyll production
Early leaf shedding
What type of pathogen causes rice blast?
(a)
What is the major symptom of chlorosis?
Stunted growth
Yellow leaves
Early leaf shedding
Malformed stems
Aphids can cause major damage to plants. What type of organism is an aphid?
Nematode
Bacteria
Insect
Arachnid
A lack of a mineral ion will cause what type of disease?
Zoonoses
Communicable disease
Infectious disease
Deficiency disease
What term describes an organism that infests a plant causing damage?
(a)
