Topic 10 - Plant Disease

Question 1

What are the 7 ways to detect plant disease

Answer 1

Stunted growth
Spots on leaves
Areas of decay
Growths
Malformed stems or leaves
Discolouration
The presence of pests

Question 2

Identification of plant disease can be made by

Answer 2

Reference to a gardening manual or website
Taking infected plants to a lab to indenting pathogen
Using testing kits that contain monoclonal antibodies

Question 3

What are the 3 thing that help defend plants from diseases

Answer 3

Cellulose in the cell walls
Tough waxy cuticle on leaves
Layers of dead cells around stems which fall off

Question 4

What are the 2 chemical plant responses

Answer 4

Antibacterial chemicals
Poisons to deter herbivores

Question 5

What are the 3 mechanical adaptations of plants

Answer 5

-thorns and hairs deter animals
-leaves which dropped or curl when touched
-mimicry to trick animals

Question 6

Knowledge of plant disease is restricted to

Answer 6

Tmv
Black spot
Aphids as insects

Question 7

Pant can be damaged by a range of ions deficiencies what are they

Answer 7

Stunted growth caused by nitrate deficiency
Chlorosis caused by magnesium deficiency