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Plant Defence Mechanisms

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Questions and Answers

What are phytoalexins?

Antimicrobial compounds in plants (correct)

Volatile organic compounds produced by plants

Spines found in cacti

Sticky substances secreted by plants

Which of the following plant structures serve as a deterrent to herbivores due to their sharpness and toughness?

Prickles

Thorns (correct)

Sticky substances

Volatile organic compounds

What is the main purpose of producing volatile organic compounds in plants?

Attracting predators of herbivores (correct)

Reducing water loss

Serving as a physical barrier

Providing shade

Which plant structure reduces the surface area of leaves and serves as a deterrent to herbivores due to its sharpness and toughness?

Prickles Signup and view all the answers

What is the significance of understanding plant defense mechanisms for agriculture?

To develop effective strategies for pest and disease management Signup and view all the answers

What is one of the primary ways plants defend themselves?

Through the production of chemical compounds Signup and view all the answers

Which of the following is a toxic compound produced by some plants to deter herbivores?

Alkaloids Signup and view all the answers

What is the function of tannins, a group of chemical compounds produced by plants?

Bind to proteins and make them indigestible to animals Signup and view all the answers

Why do some plants produce alkaloids like nicotine and caffeine?

To act as toxic deterrents against herbivores Signup and view all the answers

Why have plants evolved sophisticated defense mechanisms?

To protect themselves against herbivores, pathogens, and environmental stresses Signup and view all the answers