GCSE Biology - Plant Disease and Defences #46

The video tutorial explains how plants can contract diseases from microorganisms and larger organisms, as well as deficiency diseases due to lack of essential minerals. It describes symptoms of plant diseases and methods for diagnosing them, including observation, consulting experts, and trial and error. The video also covers plant defenses, which are categorized into physical, chemical, and mechanical defenses, highlighting how plants protect themselves from pathogens and pests.

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