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单词 mesophyll
释义

mesophyll


mes·o·phyll

M0238700 (mĕz′ə-fĭl′, mĕs′-)n. The photosynthetic tissue of a leaf, located between the upper and lower epidermis.
mes′o·phyl′lic, mes′o·phyl′lous adj.

mesophyll

(ˈmɛsəʊˌfɪl) n (Botany) the soft chlorophyll-containing tissue of a leaf between the upper and lower layers of epidermis: involved in photosynthesis ˌmesoˈphyllic, ˌmesoˈphyllous adj

mes•o•phyll

(ˈmɛz ə fɪl, ˈmɛs-, ˈmi zə-, -sə-)

n. the parenchyma, usu. containing chlorophyll, that forms the interior parts of a leaf. [1830–40] mes`o•phyl′lic, mes`o•phyl′lous, adj.

mes·o·phyll

(mĕz′ə-fĭl′) The tissues of a leaf that carry on photosynthesis, consisting of the palisade layer and the spongy parenchyma.

mesophyll


mesophyll

[′mez·ə‚fil] (botany) Parenchymatous tissue between the upper and lower epidermal layers in foliage leaves.

mesophyll


MesophyllFig. 218 Mesophyll . Transverse section of a dorsiventral leaf.

mesophyll

the internal tissue of a plant leaf, except the VASCULAR BUNDLES. In dorsiventral leaves the mesophyll is differentiated into an upper palisade mesophyll and a loosely packed, lower spongy mesophyll. In isobilateral leaves there are upper and lower palisade mesophylls and a central spongy area. In C4 PLANTS there is yet another arrangement called KRANZ ANATOMY. All mesophyll cells contain CHLOROPLASTS (for PHOTOSYNTHESIS) which lie close to the edge of the cell in order to gain maximum light and gas supply. Mesophyll tissue contains numerous intercellular spaces which communicate with the atmosphere outside the leaf via STOMATA. See Fig. 218 .
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