Plants and Their Parts Primary 3 Science Geniebook Plant island breeding chart : r MySingingMonsters Fittonia albivenis 'White Anne' Pot L Aquasabi Aquascaping Shop Alamo vine P1070400 Eat The Weeds and other things, too The Nightshade Family (Solanaceae) One family. Tomatoes, peppers, eggplants, potatoes and deadly nightshade. This group includes some of our most loved foods and some of the world's most toxic plants a Plant hormones play a critical role in regulating various physiological processes in plants . Auxins, for instance, influence cell elongation and root development , while cytokinins promote cell division and shoot growth