| 单词 | plant structure |
| 释义 | plant structure (once / 358161 pages) n WORD FAMILY plant structure: plant structures USAGE EXAMPLESOptimally, this is done with young trees — three years after planting or so — once the desired plant structure and height has been attained. Washington Post(Mar 17, 2015) "The dam and the power plant structures are completely safe," he said. Wall Street Journal(Sep 21, 2011) Their knowledge of plant structure was exceedingly limited and their microscopes were so imperfect that imagination had free scope. Phin, John, The Seven Follies of Science [2nd e...(2011) n any part of a plant or fungus Syn|Hypo|Hyper plant part stub a short piece remaining on a trunk or stem where a branch is lost buttonany of various plant parts that resemble buttons thallusa plant body without true stems or roots or leaves or vascular system; characteristic of the thallophytes cap, pileusa fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom calyptrathe hood or cap covering the calyx of certain plants: e.g., the California poppy volvacuplike structure around the base of the stalk of certain fungi domatiuma part of a plant (e.g., a leaf) that has been modified to provide protection for insects or mites or fungi pycnidiumflask-shaped asexual structure containing conidia stipulea small leafy outgrowth at the base of a leaf or its stalk; usually occurring in pairs and soon shed tepalan undifferentiated part of a perianth that cannot be distinguished as a sepal or a petal (as in lilies and tulips) gynostegiumthe crown of the stamen in plants of the genus Asclepias chalazabasal part of a plant ovule opposite the micropyle; where integument and nucellus are joined nucelluscentral part of a plant ovule; contains the embryo sac germ tube(botany) a slender tubular outgrowth from a spore in germination pollen tube(botany) a slender tubular outgrowth from a pollen grain when deposited on the stigma for a flower; it penetrates the style and conveys the male gametes to the ovule mentuma projection like a chin formed by the sepals and base of the column in some orchids corona(botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower lip(botany) either of the two parts of a bilabiate corolla or calyx myceliumthe vegetative part of a fungus consisting of a mass of branching threadlike hyphae plant organa functional and structural unit of a plant or fungus arilfleshy and usually brightly colored cover of some seeds that develops from the ovule stalk and partially or entirely envelopes the seed ducta continuous tube formed by a row of elongated cells lacking intervening end walls veil, veluma membranous covering attached to the immature fruiting body of certain mushrooms annulus, skirt(Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar plant tissuethe tissue of a plant tendrilslender stem-like structure by which some twining plants attach themselves to an object for support stump, tree stumpthe base part of a tree that remains standing after the tree has been felled prophylla plant structure resembling a leaf stocka plant or stem onto which a graft is made; especially a plant grown specifically to provide the root part of grafted plants receptacleenlarged tip of a stem that bears the floral parts kernel, meatthe inner and usually edible part of a seed or grain or nut or fruit stone lobe(botany) a part into which a leaf is divided ligule(botany) any appendage to a plant that is shaped like a strap interstitial tissuetissue between the cells of a structure or part in plant or animal fibrous tissuetissue consisting of or containing fibers in both animals and plants cortexthe tissue forming the outer layer of an organ or structure in plant or animal medullathe inner part of an organ or structure in plant or animal crustose thallusthin crusty lichen thallus; adheres closely to or is embedded in the surface on which it grows reproductive structurethe parts of a plant involved in its reproduction gynobasethe enlarged receptacle in which the pistil is borne septuma partition or wall especially in an ovary honey gland, nectarya gland (often a protuberance or depression) that secretes nectar perispermthe nutritive tissue outside the sac containing the embryo in some seeds archegoniuma female sex organ occurring in mosses, ferns, and most gymnosperms calyx tube, floral cup, hypanthiumthe cuplike or ringlike or tubular structure of a flower which bears the sepals and stamens and calyx (as in Rosaceae) chlamys, floral envelope, perianth, perigone, perigoniumcollective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils magic mushroom, mescal button, sacred mushroomthe button-shaped top of the mescal cactus; a source of psilocybin cupcup-shaped plant organ stromathe dense colorless framework of a chloroplast stromaa mass of fungal tissue that has spore-bearing structures embedded in it or on it hypobasidiumspecial cell constituting the base of the basidium in various fungi especially of the order Tremellales galeaan organ shaped like a helmet; usually a vaulted and enlarged petal as in Aconitum gill, lamellaany of the radiating leaflike spore-producing structures on the underside of the cap of a mushroom or similar fungus sclerotiumcompact usually dark-colored mass of hardened mycelium constituting a vegetative food-storage body in various true fungi; detaches when mature and can give rise to new growth fruiting bodyan organ specialized for producing spores laticifera plant duct containing latex universal veilmembrane initially completely investing the young sporophore of various mushrooms that is ruptured by growth; represented in the mature mushroom by a volva around lower part of stem and scales on upper surface of the cap partial veilmembrane of the young sporophore of various mushrooms extending from the margin of the cap to the stem and is ruptured by growth; represented in mature mushroom by an annulus around the stem and sometimes a cortina on the margin of the cap flesh, pulpa soft moist part of a fruit pithsoft spongelike central cylinder of the stems of most flowering plants parenchymathe primary tissue of higher plants composed of thin-walled cells that remain capable of cell division even when mature; constitutes the greater part of leaves, roots, the pulp of fruits, and the pith of stems lignumwoody tissue vascular tissuetissue that conducts water and nutrients through the plant body in higher plants pseudophloemfalse phloem gallabnormal swelling of plant tissue caused by insects or microorganisms or injury cirrhus, cirrususually coiled stool(forestry) the stump of a tree that has been felled or headed for the production of saplings root(botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground root capthimble-shaped mass of cells covering and protecting the growing tip of a root root hairthin hairlike outgrowth of an epidermal cell just behind the tip; absorbs nutrients from the soil rootstockroot or part of a root used for plant propagation; especially that part of a grafted plant that supplies the roots offset, runner, stolona horizontal branch from the base of plant that produces new plants from buds at its tips stalk, stema slender or elongated structure that supports a plant or fungus or a plant part or plant organ meristemundifferentiated tissue from which new cells are formed, as at the tip of a stem or root capitulum, heada dense cluster of flowers or foliage foliage, leaf, leafagethe main organ of photosynthesis and transpiration in higher plants sproutany new growth of a plant such as a new branch or a bud natural object an object occurring naturally; not made by man |
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