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Plant Defences: Physical Barriers and Chemicals

Plant Defences: Physical Barriers and Chemicals

Assessment

Interactive Video

Biology, Health Sciences

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

Plants face threats from pathogens and pests. They defend themselves using physical barriers like cell walls and bark, which protect against pathogens, and chemical defenses like antimicrobial substances and poisons, which deter both pathogens and pests. Humans have harnessed some of these plant chemicals for medicinal purposes, such as aspirin from willow bark and digitalis from foxglove. The video concludes by summarizing the dual defense strategies of plants.

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3 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What are some examples of plants that produce antimicrobial chemicals?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What types of chemicals do plants produce to defend against pests?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

How have humans utilized plant chemicals in medicine?

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