Plant Growth and DevelopmentMedium
Question
The chemical which are produced by host plants due to infection as a defence reaction to pathogen are called
Options
A.phytotoxin
B.toxin
C.phytoron
D.phytoalexins
Solution
Phytoalexins are produced by plants that are under attack. Phytoalexins produced in plants act as toxins to the attacking organism. They may puncture the cell wall , delay maturation, disrupt metabolism or prevent reproduction of pathogen in question. However, phytoaxins are often targeted to specific predators; a plant that has anti-insect phytoaxins may not have the ability to repel a fungal attack.
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