Plant Defence Mechanisms (Grade 12 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why must plants rely on defence mechanisms rather than fleeing from threats?
Why must plants rely on defence mechanisms rather than fleeing from threats?
They are rooted in place
Which THREE threats do plant defence mechanisms protect against?
Which THREE threats do plant defence mechanisms protect against?
Herbivores, insects, and pathogens
How do chemical defences protect plants?
How do chemical defences protect plants?
Producing toxic compounds that poison threats
What is the primary function of tannins in plant defence?
What is the primary function of tannins in plant defence?
Create unpleasant taste and toxicity
Why are chemical defences particularly energy-efficient?
Why are chemical defences particularly energy-efficient?
They provide continuous protection easily
What is the main purpose of mechanical defences?
What is the main purpose of mechanical defences?
Deter herbivores through physical obstacles
What are thorns?
What are thorns?
Modified branches or stems
What are prickles?
What are prickles?
Modified extensions of cortex & epidermis
What plant structures have evolved into spines?
What plant structures have evolved into spines?
Modified leaves
Why are mechanical defences valuable once developed?
Why are mechanical defences valuable once developed?
They provide permanent, ongoing protection