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A xerophyte (from Ancient Greek ξηρός (xērós) 'dry' and φυτόν (phutón) 'plant') is a species of plant that has adaptations to survive in an environment with little liquid water. Examples of xerophytes include cacti , pineapple and some gymnosperm plants.
The flower of Nymphaea alba, a species of water lily Bud of Nelumbo nucifera, an aquatic plant.. Aquatic plants also referred to as hydrophytes [1] are vascular plants and non-vascular plants [2] that have adapted to live in aquatic environments (saltwater or freshwater).
Plants that are hydrophytes (aquatic plants) live within aquatic environments including lakes, streams, ponds, and oceans. While plants that are hygrophytes grow on wet soils, [ 4 ] both types of plants are adapted to growing in soils that are low-oxygen (anaerobic) environments where there is extended periods of water saturation or flooding.
In ‘Plantesamfund’, Warming coined the words hydrophyte, mesophyte, xerophyte and halophyte. Hydrophyte - An aquatic plant; a plant which lives and grows in water. Mesophyte - A name given to plants which grow naturally in conditions of intermediate soil moisture. Xerophyte - A plant that is able to grow where the water supply is small ...
Mineralogy applies principles of chemistry, geology, physics and materials science to the study of minerals. Mineralogy [n 1] is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artifacts.
A metamorphic zone is the region between two such easily recognizable isograds. Often they are named for the most characteristic index mineral of the zone. Whether a certain index mineral occurs is also dependent on the composition of the rock itself. Many index minerals have complicated chemical compositions.
Phyllic alteration typically forms in the base-metal zone of a porphyry system. [2] Alteration assemblages vary with depth and with degree of fluid interaction. In deep environments, the most highly altered areas are veins and thin selvages, or halos, that surround them.
Osmoregulation is the active regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution which in this case is represented by body fluid) to keep the body fluids from becoming too diluted or concentrated.
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