plant diseases 2 Flashcards
what do aphids do
aphids extract nutrients such as sugars from the plant, stunting its growth
what are aphids
insects that attack plants
what are symptoms we can look at to help diagnose plant diseases?
looking for discolouration spots on leaves stunted growth decay/rot growths malformed stems or leaves
describe ways in how we can identify plant diseases
using a garden manual or website
taking the infected plant to a lab to identify the pathogen
use testing kits containing monoclonal antibodies
what are the 2 examples of ion deficiency diseasss
A lack of the nitrate ion causes stunted growth
A lack of the magnesium ion causes the condition chlorosis
what does the lack of a nitrate ion cause stunted growth?
nitrate is needed for photosynthesis and therefore growth
why does the lack of the ion magnesium cause the condition chlorides?
because magnesium is required to make chlorophyll
in chlorides, the leaves lose their green colours
