Plant defences - SB5

Question 1

what is the cuticle

Answer 1

a protective waxy layer on top of the leaf

Question 2

what are physical barriers

Answer 2

something that physically prevents the pathogen from entering the organism

Question 3

what are symptoms

Answer 3

something that is suffered when an organism is ill e.g. fever, vomiting

Question 4

what is aseptic technique

Answer 4

a technique that prevents the grow of microorganisms

Question 5

what is a chemical barrier

Answer 5

lectin

Question 6

is the cuticle a physical or chemical barrier and how does it prevent infection?

Answer 6

physical - makes it difficult for pathogens to get to the cells beneath

Question 7

is bark a physical or chemical barrier and how does it prevent infection?

Answer 7

physical - thick layer covering trees and bushes preventing pathogens from entering

Question 8

are the cell walls physical or chemical barrier and how does it prevent infection?

Answer 8

chemical - cast defence after cuticle

Question 9

are hairs a physical or chemical barrier?

Answer 9

physical and chemical

Question 10

are thorns a physical or chemical barrier?

Answer 10

physical