Question

Observe the figure and answer the questions that follows. [4 marks]


(a) Write the name of the disease.
(b) Name the causative agent of this disease?
(c) How does the disease spread from one plant to another?
(d) Name any two plant diseases and the microbes that cause them.

Answer 1

(a) The name of the disease is yellow vein mosaic of lady’s finger/okra/ bhindi.
(1 mark)
(b) The causative agent of this disease is a virus.
(1 mark)
(c) The disease spreads from one plant to another through insects.
(1 mark)

(d) Two plant diseases are:

• Citrus canker caused by bacteria.
• Rust of wheat caused by fungus.

(1 mark)