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Because ancestral plants had mutant genes that made them produce these products, which acted to protect them from bacteria diseases, which allowed them to flourish, which allowed them to supplant rival conspecifics that lacked the genes that caused them to produce the products, and the living plants of present time inherited the genes in question from their ancestors.

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What other organisms produce the same products as plants?

animals produce energy....


What raw products do plants use to produce a substance?

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Plants produce antimicrobial compounds and have physical barriers like cell walls to resist pathogens. Animals have immune systems that produce antibodies and cells that can recognize and eliminate pathogens through various mechanisms such as phagocytosis and inflammation.


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