Diseases of Animals and Plants (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What are the two main categories of plant defence mechanisms against pathogens?
What are the two main categories of plant defence mechanisms against pathogens?
Passive and active
What is a key characteristic of passive plant defences?
What is a key characteristic of passive plant defences?
Always active, providing constant protection
Where is the Casparian strip located and what is it made of?
Where is the Casparian strip located and what is it made of?
Root endodermis; waterproof suberin
How does the hypersensitivity response protect plants from pathogens?
How does the hypersensitivity response protect plants from pathogens?
Rapid cell death starves the pathogen
Which function is NOT performed by callose deposition?
Which function is NOT performed by callose deposition?
Direct killing of plant cells
How do phytoalexins combat fungal pathogens?
How do phytoalexins combat fungal pathogens?
Stimulating chitinase secretion
Which molecules provide systemic acquired resistance throughout the plant?
Which molecules provide systemic acquired resistance throughout the plant?
Salicylic acid and ethylene
What property of the waxy cuticle prevents pathogen penetration?
What property of the waxy cuticle prevents pathogen penetration?
Hydrophobic nature
What are tyloses and where are they found?
What are tyloses and where are they found?
Physical blockages in xylem vessels
What is the function of tannins in plant chemical defence?
What is the function of tannins in plant chemical defence?
Block cellulases and other enzymes