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Seed dispersal. Appearance. In spermatophyte plants, seed dispersal is the movement, spread or transport of seeds away from the parent plant. [ 1 ] Plants have limited mobility and rely upon a variety of dispersal vectors to transport their seeds, including both abiotic vectors, such as the wind, and living (biotic) vectors such as birds.
Transport. Transport (in British English) or transportation (in American English) is the intentional movement of humans, animals, and goods from one location to another. Modes of transport include air, land (rail and road), water, cable, pipelines, and space.
A mode of transport is a method or way of travelling, or of transporting people or cargo. [ 1 ] The different modes of transport include air, water, and land transport, which includes rails or railways, road and off-road transport. Other modes of transport also exist, including pipelines, cable transport, and space transport.
For human systems, see active mobility. In cellular biology, active transport is the movement of molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration —against the concentration gradient. Active transport requires cellular energy to achieve this movement.
Membrane transport. In cellular biology, membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes, which are lipid bilayers that contain proteins embedded in them. The regulation of passage through the membrane is due to selective membrane ...
Essence of transport. Driving involves controlling a vehicle, usually a motor vehicle such as a truck, bus, or automobile. For motorcycles, bicycles and animals, it is called riding. Shipping, transporting of goods and cargo, by land, sea, and air. Travel, movement of people, by land, sea, and air.
The environmental impact of transport are significant because transport is a major user of energy, and burns most of the world's petroleum. This creates air pollution, including nitrous oxides and particulates, and is a significant contributor to global warming through emission of carbon dioxide. [2][3] and also plant pollution, by heavy metals ...
Most land plants and land ecosystems rely on mutualism between the plants, which fix carbon from the air, and mycorrhyzal fungi, which help in extracting water and minerals from the ground. [ 42 ] An example of mutualism is the relationship between the ocellaris clownfish that dwell among the tentacles of Ritteri sea anemones .