The Presence of Necrotic Lesions on the Leaves of a Plant

Question

The presence of necrotic lesions on the leaves of a plant would suggest that the plant
A) cannot fight off a pathogen.
B) has been killed by a pathogen.
C) has prevented a pathogen from spreading.
D) has successfully fought off a pathogen.
E) has stopped a pathogen,but only temporarily.

Accepted Answer

Necrotic lesions on leaves often indicate that the plant has localized the pathogen to prevent its spread, a defense mechanism known as the hypersensitive response.