實驗花的構(gòu)造ppt課件(存儲版)
【正文】 is in the first prophase of meiosis. (c) Ovule with eightnucleate embryo sac (only six of tile nuclei can be seen here, two at the chalazal end and four at the micropylar end). The polar nuclei have not yet migrated to the center of the sac. 五、種子 Seed 種皮 Seed coat 胚 embryo 胚乳 endosperm 子葉 胚芽 胚軸 胚根 珠被 受精卵 受精極核 六、果實 Fruit 果皮 pericarp 種子 seed 子房壁 胚珠 外果皮 中果皮 內(nèi)果皮 以果實成熟時果皮的性質(zhì)，分為肉果和干果： 肉果 漿果 berry 核果 drupe 梨果 pome 瓠果、柑果 干果 裂果： 莢果 legume Dehiscent 蓇葖 follicle 蒴果 capsule 角果 閉果： 瘦果 achene indehiscent 翅果 samara 堅果 nut 穎果 caryopsis 。 two stamens and a style protrude from a pocket on the upper surface of the plant. Monocots. (a) A member of the palm family, ily, the coconut palm (Cocos nuci fera), grozoing in Tehuantepec, Oaxaca, Mexicon. The fruit of coconut is a drupe, not a nut (see Chapter 19). (b) Flowers and fruits of the banana plant (Musa X paradisiaca). The banana flower has an
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