What type of pathogen causes barley powdery mildew?
Virus
Bacteria
Fungus
What is the consequence of nitrate deficiency in plants?
Chlorophyll in leaves reduces
Tumours develop in the roots
White powder appears on the leaves
What would you observe if a plant was infected with Agrobacterium tumefaciens?
White powder on the leaves
Yellowing of the leaves
Tumours developing in the roots
Which of these is a chemical plant defence?
Waxy leaf cuticle
Antimicrobial substances
Cell wall
What is the cell wall made of in plant cells?
Chitin
Cellulose
Chlorophyll
If a gardener had a plant infected with aphids, which predator of aphids would they introduce?
Ants
Ladybirds
Caterpillars
What are plants lacking when they suffer from deficiency
Lack of water
Lack of sunlight
Lack of mineral ions
What is magnesium used to make in plants?
Proteins
Starch
What is a pathogen? - Higher
A microorganism that causes disease
A microorganism that prevents disease
An organism that carries another microorganism from one organism to another
How would monoclonal antibodies be used to diagnose a plant disease? - Higher
They would bind to a specific pathogen antigen in a plant tissue sample
They would bind to a specific pathogen antibody in a plant tissue sample
They would bind to a specific plant antigen in the plant tissue sample