What is the probable role of salicylic acid in the defense responses of plants?
A)to destroy pathogens directly
B)to activate the systemic acquired resistance of plants
C)to close stomata,thus preventing the entry of pathogens
D)to activate heat-shock proteins

Question

Quizplus · Accepted Answer

Salicylic acid is known to be involved in the activation of systemic acquired resistance (SAR) in plants, which is a broad-spectrum defense response against various pathogens. SAR involves the production of defense-related proteins and the strengthening of the plant cell walls to prevent the spread of pathogens. Salicylic acid is also involved in the signaling pathway that activates the expression of defense genes in response to pathogen attack.

What Is the Probable Role of Salicylic Acid in the Defense