Plant disease

Question 1

What are examples of plant defences? (8 examples)

Answer 1

Thick cell walls, waxy cuticles on leaves, antibacterial chemicals, poisons to deter herbivores, leaves which droop, mimicry, thorns and hairs

Question 2

How can plant diseases be detected? (7 examples)

Answer 2

Stunted growth, spots or discoloration, decay, growths, malformed stems and the presence of pests

Question 3

What leads to stunted growth in plants?

Answer 3

A lack of nitrate ions

Question 4

What causes a lack of chlorophyll in plants?

Answer 4

A lack of magnesium ions

Question 5

What are some physical plant defence responses? (3 examples)

Answer 5

Cellulose cell walls, tough waxy cuticle, layers of dead cells (bark)

Question 6

What are some chemical plant defence responses? (2 examples)

Answer 6

Antibacterial chemicals, poisons

Question 7

What are some mechanical adaptions?

Answer 7

Thorns and hairs, leaves which droop or curl, mimicry