Plant diseases and defences Flashcards
1
Q
why do plants need mineral ions
A
without them they suffer from deficiency symptoms
2
Q
what are needed to make proteins and growth and why
A
nitrates
a lack of them causes stunted growth
3
Q
what is needed to make chlorophyll and why
A
magnesium ions for photosynthesis
a lack of makes plants suffer from chlorosis and have yellow leaves
4
Q
what can plants be infected by
A
viral, bacterial and fungal pathogens
infested and damaged by insects
5
Q
list 8 signs to tell that a plant has a disease
A
stunted growth spots on the leaves patches of decay abnormal growths malformed stems or leaves discolouration
6
Q
how can you identify different signs of different diseases
A
looking up the signs in a gardening manual or on a gardening website
taking the plant to a lab
using testing kits
