12/3 plant defences Flashcards
(4 cards)
1
Q
What is an advantage of a potato plant only producing a poisonous substance when it’s attacked?
A
It saves energy and stops them from returning
2
Q
What is an advantage of foxglove always being poisonous?
A
If the poison were to attack later, once the plant had been attacked, it would be too late to have any effect
3
Q
What is aseptic technique?
A
Using practices and procedures to prevent contamination from pathogens
4
Q
Why must cultures of bacteria in petri dishes be kept covered?
A
Microorganisms could get in and kill bacteria
