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Plant tissue culture is a collection of techniques used to maintain or grow plant cells, tissues, or organs under sterile conditions on a nutrient culture medium of known composition. It is widely used to produce clones of a plant in a method known as micropropagation. Different techniques in plant tissue culture may offer certain advantages ...
The formation of woody tissue is an example of secondary growth, a change in existing tissues, in contrast to primary growth that creates new tissues, such as the elongating tip of a plant shoot. The process of wood formation ( lignification ) is commonest in the spermatophytes (seed bearing plants) and has evolved independently a number of times.
Phloem (/ ˈfloʊ.əm /, FLOH-əm) is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, [1] to the rest of the plant. This transport process is called translocation. [2]
t. e. In biology, tissue is an assembly of similar cells and their extracellular matrix from the same embryonic origin that together carry out a specific function. [1][2] Tissues occupy a biological organizational level between cells and a complete organ.
The One Ring, also called the Ruling Ring and Isildur's Bane, is a central plot element in J. R. R. Tolkien 's The Lord of the Rings (1954–55). It first appeared in the earlier story The Hobbit (1937) as a magic ring that grants the wearer invisibility. Tolkien changed it into a malevolent Ring of Power and re-wrote parts of The Hobbit to fit ...
Beren and Lúthien. Sauron (pronounced [ˈsaʊrɔn][T 2]) is the title character [a] and the primary antagonist, [1] through the forging of the One Ring, of J. R. R. Tolkien 's The Lord of the Rings, where he rules the land of Mordor and has the ambition of ruling the whole of Middle-earth.
Myloplus sauron and Myloplus aylan have flat, blunt teeth used to chew on plants, a stark contrast with the razor-sharp teeth found in piranhas, but similar to their other pacu counterparts.
Ndimbu mask from Tanganyika, made with wood, hair and bast. Bast fibre (also called phloem fibre or skin fibre) is plant fibre collected from the phloem (the "inner bark", sometimes called "skin") or bast surrounding the stem of certain dicotyledonous plants. Some of the economically important bast fibres are obtained from herbs cultivated in ...