《實(shí)驗(yàn)花的構(gòu)造》ppt課件-文庫吧
2025-04-18 22:07 本頁面
【正文】 t bears a large scar left by the fallen flower parts . (c) Rice (Oryza sativa) is a member of the grass family. function of the leaves. (c) Roundlobed hepatica (Hepatica americana), which flowers in deciduous woodlands in the early spring. The flowers have no petals but have six to ten sepals and numerous spirally arranged stamens and carpels. (b) Saguaro cactus (Carnegiea gigantea). The cacti, of which there are about 2022 species, are almost exclusively a New World family. The thick, fleshy stems, which store water, contain chloroplasts and have taken over the photosynthetic 穗狀花序 傘形花序 傘房花序 總狀花序 圓錐花序 柔荑花序 復(fù)傘形花序 頭狀花序 肉穗花序 （一）花的組成與基本結(jié)構(gòu) 花 花柄 Pedicel 花托 Receptacle 花被 Perianth 雄蕊群 Androecium 雌蕊群 Gynoecium 花柄和花托 下位花 周位花 上位花 花被 花萼 Calyx 花冠 Corolla 萼片 ：由薄壁組織、維管系統(tǒng)及表皮層組成 Sepal 表皮層上有氣孔和表皮毛 花瓣 ： 由薄壁組織、維管系統(tǒng)及表皮層組成 Petal 表皮層細(xì)胞的垂周壁呈波紋狀或內(nèi)脊， 表皮層上有氣孔和表皮毛 薄壁組織中可含有一些異細(xì)胞，成熟 花瓣中 有有色體或細(xì)胞液中有花青素 雄蕊群 花藥 Anther 花絲 Filament 雌蕊群 子房 Ovary 花柱 Style 柱頭 Stigma 基本單位是心皮 Carpel Parts of a lily (Lilium henryi) flower. (a)
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