All plants contain a green pigment known as chlorophyll, all plants create energy from sunlight using a process known as photosynthesis, and all plants contain material called cellulose, which creates their cell walls. There are about 260,000 known species of plants in the world as of 2015.
Bamboo is the fastest growing plant in the world and can grow up to 35 inches in a single day. The world's tallest species of plant is the coast redwood, which grows along the California coastline.
Although all plants are members of the kingdom Plantae, plants are divided into two types, depending on how they reproduce. Some plants reproduce by making flowers; these plants produce seeds, carrying them in capsules or fruit. These plants are known as angiosperms. Examples of angiosperms include orchids, cabbages, daisies and maize.
Plants that reproduce without flowering, including cedar trees, redwoods, pines, firs and juniper, are called gymnosperms. The vast majority of plant species, about 230,000, are angiosperms.
Trees are the longest-living organisms on the planet, as well as some of the most ancient. One of the most ancient tree species is the Ginkgo biloba; fossil records show that this tree has existed for approximately 250 million years.