子叶

Cotyledon in formation before the accumulation of the reserve seen at Judas-tree (Cercis siliquastrum)

Partes de una semilla, el cotiledón está en el germen.

Schematic of epigeal vs hypogeal germination

子叶（cotyledon）是植物种子胚的组成部分之一，位于胚茎上部，具有贮存养料或幼苗时期进行同化作用的器官。

无胚乳种子的子叶，因为贮存养料较多，所以特别肥厚，如豆科、葫芦科等植物的种子；禾本科植物的子叶称“内子叶”或“盾片”，其功能较为特殊，具有吸收和消化作用；某些禾本科植物(如小麦)，胚外相对的一侧有一突起称为“外子叶”。

单词	cotyledon
释义	cotyledon /ˌkɒtɪ'liːd(ə)n//ˌkɑtl'idən/ 英汉-汉英词典 n. 子叶词组 \| 习惯用语您要查找的是不是： Caledonia n. 加勒多尼亚 cuttlebone n. 墨鱼的骨 cotyledon n. [植] 子叶网络短语: conduplicate cotyledon 对折子叶 petiolate cotyledon 具柄子叶 Cotyledons Leaflike 子叶叶状 mature cotyledon 子叶 Cotyledons Oblong 子叶长圆形 diplecolobous cotyledon 回折子叶 excised cotyledon 离体子叶 Cotyledons Thick 子叶厚 Cotyledons Large 子叶大英语例句库 Its cotyledon node zone is telome elongation type. 向日葵幼苗的子叶节区类型为顶枝伸长型。 The large amount of PAO could be found in the cytoplasm of parenchyma in cotyledon and in the cell membranes and intercellular spaces of cortical parenchyma in phyllogen. 顶芽皮层薄壁组织细胞的细胞膜、细胞间隙和子叶薄壁组织细胞的细胞质也有PAO的大量分布。 The results showed that the levels of arginine and arginase were the highest in cotyledons, which decreased slowly during plant development, followed by leaves and stems, with roots being the lowest. 结果表明，精氨酸含量和精氨酸酶活性子叶中最高，且随幼苗生长发育逐渐下降，其次为叶片和茎，根中最低。声明：以上例句、词性分类均由互联网资源自动生成，未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。原声例句少儿科学秀 The cotyledon is basically stored-up plant food. 子叶基本上是储存的植物性食物。少儿科学秀 When you eat a bean, your body also uses the cotyledon to give you energy! 当你吃一颗豆子时，你的身体也会利用子叶为你提供能量！少儿科学秀 So the cotyledon gives the embryo the little boost it needs. 所以子叶给胚胎提供了它所需要的一点点刺激。少儿科学秀 The rest of the bean is made up of this solid white stuff, and it has a funny name: it's called the cotyledon. 豆子的其余部分是由这种纯白色的东西组成的，它有一个有趣的名字：它叫做子叶。物种起源 It can be shown that plants most widely different in habit and general appearance, and having strongly marked differences in every part of the flower, even in the pollen, in the fruit, and in the cotyledons, can be crossed. 可以证明，在习性和一般外观上差异最大的植物，以及在花的每一部分，甚至在花粉、果实和子叶中都具有强烈显着差异的植物，是可以杂交的。中文百科子叶子叶（cotyledon）是植物种子胚的组成部分之一，位于胚茎上部，具有贮存养料或幼苗时期进行同化作用的器官。无胚乳种子的子叶，因为贮存养料较多，所以特别肥厚，如豆科、葫芦科等植物的种子；禾本科植物的子叶称“内子叶”或“盾片”，其功能较为特殊，具有吸收和消化作用；某些禾本科植物(如小麦)，胚外相对的一侧有一突起称为“外子叶”。英语百科 Cotyledon 子叶 A cotyledon (/kɒtᵻˈliːdən/; "seed leaf" from Latin cotyledon, from Greek: κοτυληδών kotylēdōn, gen.: κοτυληδόνος kotylēdonos, from κοτύλη kotýlē "cup, bowl") is a significant part of the embryo within the seed of a plant, and is defined by the Oxford English Dictionary as "The primary leaf in the embryo of the higher plants (Phanerogams); the seed-leaf." Upon germination, the cotyledon may become the embryonic first leaves of a seedling. The number of cotyledons present is one characteristic used by botanists to classify the flowering plants (angiosperms). Species with one cotyledon are called monocotyledonous ("monocots"). Plants with two embryonic leaves are termed dicotyledonous ("dicots") and placed in the class Magnoliopsida. 近义、反义、联想词近义词 n. cataphyll 联想词 germination萌芽,发生;embryo胚胎;seedlings幼苗;placenta胎盘;pea豌豆;sprout长芽;leaf叶子;apical顶上的, 顶点的;seed种子;basal基础的;flowering开花的;
随便看	equivalent analysis equivalent anchor items Equivalent annual annuity Equivalent annual cash flow Equivalent annual cost equivalent annual cost method equivalent annual profit equivalent annual worth comparisons equivalent anode circuit equivalent antenna equivalent area equivalent area of turbine nozzle equivalent articulation loss equivalent aspect equivalent aspect ratio equivalent automation equivalent automaton equivalent availability factor equivalent available factor equivalent axis equivalent axis coil equivalent axles equivalent background equivalent background input equivalent bandwidth

cotyledon /ˌkɒtɪ'liːd(ə)n//ˌkɑtl'idən/

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网络短语:

子叶

Cotyledon 子叶

近义词

联想词