B5.11 Plant defence responses Flashcards
1
Q
What are some examples of physical barriers?
A
Cellulose walls - resist invasion to pathogens
Tough waxy cuticle - acts a barrier to the entry of pathogens
Bark on trees - form protective layers
Leaf fall - any pathogens that infect the leaves falls of the trees when leaves are lost
2
Q
What are chemical barriers in plants?
A
Antibacterial chemicals that protect them against invading pathogens
3
Q
What are some examples of chemical defences?
A
Poisons to deter herbivores from eating them
4
Q
What are some examples of physical defenses?
A
Thorns and hairs
Drooping leaves
