Question

How is systemic acquired resistance carried out by the plant?

A) Through the release of toxins
B) By activating physical barriers
C) Through the production of antimicrobial compounds
D) By inducing a broad-spectrum defense response throughout the plant

Correct Answer: D) By inducing a broad-spectrum defense response throughout the plant

Answer 1

Systemic acquired resistance in plants is carried out by inducing a broad-spectrum defense response throughout the plant. This involves the activation of defense genes and the production of antimicrobial compounds.

Step-by-step explanation:

Systemic acquired resistance (SAR) in plants is carried out by inducing a broad-spectrum defense response throughout the plant. This is achieved through the activation of defense genes and the production of antimicrobial compounds.

For example, the plant hormone salicylic acid (SA) plays a crucial role in SAR establishment by activating defense genes and signaling pathways. Upon infection by a pathogen, SAR-inducing molecules like SA are produced and transported to systemic tissues, which prepares the plant for a faster and more efficient defense response in case of future pathogen attacks.