Organisms in the kingdom Plantae, commonly referred to as plants, are multicellular, have specialized reproductive organs, unique cell structures and produce food using photosynthesis. This kingdom includes all land plants and some aquatic organisms as well. read more
The fungi (singular, fungus) once were considered to be plants because they grow out of the soil and have rigid cell walls. Now they are placed independently in their own kingdom of equal rank with the animals and plants and, in fact, are more closely related to animals than to plants. read more