A. An example of a sign of a pathogen on a diseased plant is a. soft rot b. a canker on a plant stem c. stunted growth d. mycelium of a pathogen on the plant surface.

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Geography

Pierre Coffey

3 March, 23:23

A. An example of a sign of a pathogen on a diseased plant is a. soft rot b. a canker on a plant stem c. stunted growth d. mycelium of a pathogen on the plant surface.

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Answers (1)

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Essence Jimenez · Answer 1

b. a canker on a plant stem

Explanation:

A canker on a plant stem -

It is the clear and strong evidence of a plant suffering from a disease which is due to pathogens.

According to the question, other options, stunted growth and soft rot, are not caused because of pathogens, they are due to genetic reasons.

And, the option, mycelium of a pathogen, is not a plant disease.

Hence, incorrect option.

Therefore, from the options, the correct one is - a canker on a plant stem.