Question: Calpurnia and Nandina, are what type of plants?
Sentence (from "Biocommunication (science)"): Biocommunication of animals may include vocalizations (as between competing bird species), or pheromone production (as between various species of insects), chemical signals between plants and animals (as in tannin production used by vascular plants to warn away insects), and chemically mediated communication between plants and within plants.
Relevant evidence: No