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Question
Assertion :Necrotrophic pathogens enter plant cells by degrading plant cell wall polymer. Reason: Necrotrophic pathogens produce a wide range of extra cellular enzymes.
Assertion :Necrotrophic pathogens enter plant cells by degrading plant cell wall polymer. Reason: Necrotrophic pathogens produce a wide range of extra cellular enzymes.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
A necrotrophic organism causes the death of host tissues as it grows through them in such a wat that it is always colonising dead substrate. Necrotrophic pathogens actively kill host tissue as they colonize and thrive on the contents of dead or dying cells. Necrotrophic pathogens, which kill cells and feed on dead tissues, typically macerate plant tissues by secreting abundant hydrolytic enzymes that degrade cell wall polymers. Examples of nectrotrophic species with a wide host range include Botrytis cinerea, Alternaria brassicicola, Plectosphaerella cucumerina, Monilinia spp., Sclerotinia sclerotiorum and Fusarium spp.So, the correct option is 'A'.
A necrotrophic organism causes the death of host tissues as it grows through them in such a wat that it is always colonising dead substrate. Necrotrophic pathogens actively kill host tissue as they colonize and thrive on the contents of dead or dying cells. Necrotrophic pathogens, which kill cells and feed on dead tissues, typically macerate plant tissues by secreting abundant hydrolytic enzymes that degrade cell wall polymers. Examples of nectrotrophic species with a wide host range include Botrytis cinerea, Alternaria brassicicola, Plectosphaerella cucumerina, Monilinia spp., Sclerotinia sclerotiorum and Fusarium spp.
So, the correct option is 'A'.
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