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Plant physiology encompasses all the internal chemical and physical activities of plants associated with life. [155] Chemicals obtained from the air, soil and water form the basis of all plant metabolism. The energy of sunlight, captured by oxygenic photosynthesis and released by cellular respiration, is the basis of almost all life.
Plants of the World: An Illustrated Encyclopedia of Vascular Plants. Chicago, Illinois: Kew Publishing and The University of Chicago Press. pp. 18– 637. ISBN 978-0-226-52292-0. Coombes, Allen (2012). The A to Z of Plant Names: A Quick Reference Guide to 4000 Garden Plants. Portland, Oregon: Timber Press. ISBN 978-1-60469-196-2.
In seed plants (gymnosperms and flowering plants), the sporophyte forms most of the visible plant, and the gametophyte is very small. Flowering plants reproduce sexually using flowers, which contain male and female parts: these may be within the same ( hermaphrodite ) flower, on different flowers on the same plant , or on different plants .
The leaf is usually the primary site of photosynthesis in plants.. Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic.This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll.
Lists of useful plants; Herb. Plants used as herbs or spices; List of plants used in herbalism; List of culinary herbs and spices; List of herbs with known adverse effects; Medicinal plants. List of medicinal plants of the American West; List of textile fibres; List of woods; List of Indian timber trees; List of beneficial weeds; List of plants ...
The majority are threatened by habitat loss, but activities such as logging of wild timber trees and collection of medicinal plants, or the introduction of non-native invasive species, also play a role. [88] [89] [90] Relatively few plant diversity assessments currently consider climate change, [87] yet it is starting to impact plants as well.