plant diseae

Question 1

how are plant diseases detected

Answer 1

-stunted growth
-spots on leave
-areas of decay
-discolouration
-the presence of pests
-malformed stems or leafs

Question 2

how can plant disease be identified

Answer 2

-going on a gardening website or checking a manual

-taking plants to lab to identify pathogens

-using testing kit that contains monoclonal antibodies

Question 3

what causes stunted growth in plants

Answer 3

nitrate deficiency

Question 4

what causes chlorosis

Answer 4

a magnesium deficiency

Question 5

what’s are nitrate ions needed for in plants

Answer 5

for protein synthesis and therefore growth

Question 6

what are magnesium ions needed for

Answer 6

they are needed to make chlorophyll

Question 7

3 physical responses to resist invasion of microorganisms

Answer 7

-cellulose cell walls
-tough waxy cuticle on leaves
-layers of dead cells around stem wich fall off

Question 8

what are chemical plant defence responses

Answer 8

-antibacterial chemicals
- poisons to deter herbivores

Question 9

what are mechanical adaptations that plants make to defend themselves

Answer 9

-thorns and hairs to deter animals
-leaves wich droop or curl when touched
-mimicry to trick animals