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3 years ago

What are the 1st and 2nd line of defence of plant against pathogens?

Biology

1 answer:

sladkih [1.3K]3 years ago

6 0

Answer: These may be:

physical defenses (1st line)
chemical defenses (2nd line)

Explanation:

Plants employ several methods in order to defend themselves from pathogens. These may be physical defenses or chemical ones. Several have adaptations to their surfaces that prevent the entry of pathogens, called physical barriers such as

thick waxy cuticles
thorns, which are modified plant branches
spines, which are modified plant leaves
gall production at infected sites to prevent pathogenic spread

Chemical defenses include the production or secretion of:

defensins
antimicrobials such as tannins or resins
gum at areas facing pathogenic attacks

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according to sciencethreads.com

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Read 2 more answers

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Zigmanuir [339]

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Hope it helps! <3

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3 years ago