When exposed to cell wall fragments broken down by a newly discovered pathogen, a plant turns on its defenses.Chemicals within these cell wall fragments can best be interpreted as

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The description of the cell wall fragments as activating the plant's defenses suggests that they are elicitors, which are molecules that trigger a response in the plant's immune system. Anthocyanins and latex are not typically associated with plant defense responses, while secondary metabolites may have a variety of roles in plant metabolism but are not specifically linked to pathogen recognition. Receptors could be involved in the plant response, but the chemicals themselves are not receptors.

When Exposed to Cell Wall Fragments Broken Down by a Newly