plant defences Flashcards
1
Q
physical barriers to plants
A
plants have bark and thick waxy cuticles that are difficult for plants to get through
spikes and thorns to stop pests from eating them
2
Q
chemical barriers for plants
A
They make poisons in their cells to deter pests that try to eat them
they make chemicals that kill pathogens witch kill infect them and cause disease.
3
Q
what are uses of plant chemicals
A
quinine- to treat human disease eg malaria
willowtree and other plants- to relieve symptoms eg pain and fever
