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Parenchyma is a versatile ground tissue that generally constitutes the "filler" tissue in soft parts of plants. It forms, among other things, the cortex (outer region) and pith (central region) of stems, the cortex of roots, the mesophyll of leaves, the pulp of fruits, and the endosperm of seeds.
Cross section of collenchyma cells. Collenchyma (Greek, 'Colla' means gum and 'enchyma' means infusion) is a living tissue of primary body like Parenchyma. Cells are thin-walled but possess thickening of cellulose, water and pectin substances (pectocellulose) at the corners where a number of cells join. This tissue gives tensile strength to the ...
Cork cambium of woody stem ().It is different from the main vascular cambium, which is the ring between the wood on the inside (top) and the red bast outside it.. Cork cambium (pl.: cambia or cambiums) is a tissue found in many vascular plants as a part of the epidermis.
Collocyte is a term variously applied in botany [1] and zoology [2] [3] [4] to cells that produce gluey substances, or that bind or capture prey or assorted objects by securing them with gluey materials and structures, or that simply look smooth and gelatinous.
A 3+3 indicates six stamens in two whorl s. androgynophore A stalk bearing both the androecium and gynoecium of a flower above the level of insertion of the perianth. androgynous Having male and female flowers in the same inflorescence. androphore The stalk or column supporting the stamen s in certain flowers. andromonoecious
On October 30, 2018, Apple released a new MacBook Air with Amber Lake processors, a 13.3-inch Retina display with a resolution of 2560×1600 pixels, Touch ID, and two combination USB-C 3.1 Gen 2/Thunderbolt 3 ports plus one audio jack. The screen displays 48% more color, and the bezels are 50% narrower than the previous generation and occupies ...
MacBook Air Tapered Unibody (Late 2010) MacBook Air: July 20, 2011 2011 February 24, 2011 MacBook Pro Unibody (Early 2011) MacBook Pro: October 24, 2011 May 3, 2011 iMac Unibody (Mid 2011) iMac: October 23, 2012 July 20, 2011 MacBook Air Tapered Unibody (Mid 2011) MacBook Air: June 11, 2012 Mac Mini Unibody (Mid 2011) Mac Mini: October 23, 2012
Aerenchyma in stem cross section of a typical wetland plant. Aerenchyma or aeriferous parenchyma [1] or lacunae, is a modification of the parenchyma to form a spongy tissue that creates spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root. [2]