- primary phloem
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Bot.phloem derived directly from the growth of an apical meristem.
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Universalium. 2010.
primary phloem
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primary phloem — noun : the first formed phloem; specifically : phloem developed from an apical meristem * * * Bot. phloem derived directly from the growth of an apical meristem … Useful english dictionary
Phloem — Cross section of a flax plant stem: 1. Pith, 2. Protoxylem, 3. Xylem I, 4. Phloem I, 5. Sclerenchyma (bast fibre), 6. Cortex, 7. Epidermis In vascular plants, phloem is the living tissue that carries organic … Wikipedia
phloem — /floh em/, n. the part of a vascular bundle consisting of sieve tubes, companion cells, parenchyma, and fibers and forming the food conducting tissue of a plant. [ < G (1858), irreg. < Gk phló(os) bark (var. of PHLOIÓS) + ema deverbal n. ending]… … Universalium
secondary phloem — noun : phloem produced by the cambium compare primary phloem * * * phloem derived from the cambium during secondary growth … Useful english dictionary
internal phloem — noun : primary phloem internal to the primary xylem and either in contact with it or in discrete strands … Useful english dictionary
angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction any member of the more than 300,000 species of flowering plants (division Anthophyta) … Universalium
plant development — Introduction a multiphasic process in which two distinct forms succeed each other in alternating generations. One form, created by the union of sexual cells (gametes (gamete)), contains two sets of similar chromosomes (diploid). At sexual… … Universalium
tree — treelike, adj. /tree/, n., v., treed, treeing. n. 1. a plant having a permanently woody main stem or trunk, ordinarily growing to a considerable height, and usually developing branches at some distance from the ground. 2. any of various shrubs,… … Universalium
Tree — /tree/, n. Sir Herbert Beerbohm /bear bohm/, (Herbert Beerbohm), 1853 1917, English actor and theater manager; brother of Max Beerbohm. * * * I Woody perennial plant. Most trees have a single self supporting trunk containing woody tissues, and in … Universalium
Bark — Bark, also known as periderm, is the outermost layer of stems and roots of woody plants such as trees. It overlays the wood and consists of three layers, the cork or phellem, the phelloderm and the cork cambium or phellogen. Products used by… … Wikipedia
