How to externally define a plant monocotyledonous or dicotyledonous?

Monocotyledonous plants are characterized by arcuate or parallel leaf venation, a fibrous root system, the number of petals is a multiple of 3, and dicotyledonous plants are characterized by reticular venation (simple and complex leaves), taproot system, the number of petals is a multiple of 4 or 5.



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