9.21 血管血管生命周期
章节大纲
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What's the most successful type of plant?
::什么是最成功的植物类型?Flowering plants. Why? As you know, flowers come in many different styles and colors, and many are visually pleasing. This aids in pollination . Also notice the anatomy of this Hibiscus flower. Each part has evolved to play a role in the .
::鲜花植物。 为什么? 如你所知, 花朵以许多不同的风格和颜色而来, 许多是视觉上令人愉快的。 这在授粉中起到了辅助作用。 也注意到了希比丘斯花的解剖。 每个部分都演化了在其中扮演的角色 。Life Cycle of Angiosperms
::血管动物生命周期, or flowering plants, are the most abundant and diverse plants on Earth. Angiosperms evolved several reproductive adaptations that have contributed to their success. Like all , their life cycle is dominated by the sporophyte generation. A typical angiosperm life cycle is shown in Figure .
::植物,即开花植物,是地球上最丰富和最多样化的植物。血管动物发展出几种有助于其成功的生殖适应方法。和所有生物一样,它们的生命周期以花生植物一代为主。典型的血管动物生命周期在图中显示了。Life cycle of an angiosperm
::血管血管的生命周期The flower in Figure is obviously an innovation in the angiosperm life cycle. Flowers form on the dominant sporophyte plant. They consist of highly specialized male and female reproductive organs . Flowers produce spores that develop into gametophytes . Male gametophytes consist of just a few within a pollen grain and produce . Female gametophytes produce eggs inside the ovaries of flowers. Flowers also attract pollinators .
::图中的花朵显然是血管周期的创新。花朵出现在占支配地位的植物上。花朵由高度专业化的男性和女性生殖器官组成。花朵产生螺旋状体,发展成植物植物。雄性植物素由花粉颗粒中的几颗组成并生产。雌性植物素在花卵卵中产卵。花朵也吸引了授粉者。If pollination and occur, a diploid zygote forms within an ovule in the ovary. The zygote develops into an embryo inside a seed , which forms from the ovule and also contains food to nourish the embryo. The ovary surrounding the seed may develop into a fruit . Fruits attract animals that may disperse the seeds they contain. If a seed germinates, it may grow into a mature sporophyte plant and repeat the cycle.
::如果授粉和发生,卵巢中卵巢内的卵巢内会形成一种浸泡状的zygote形态。 zygote会发展成一种种子中的胚胎,这种种子从卵浆中形成,并含有养殖胚胎的食物。 围绕种子的卵巢可能会发展成水果。 水果会吸引可能散布种子的动物。 如果种子发芽,它会发展成成熟的脊椎植物,并重复循环。Summary
::摘要-
In flowering plants, the gametophyte generation takes place in a flower, which forms on the mature sporophyte plant.
::在花生植物中,植物植物的产生发生在花朵中,花朵形成于成熟的花朵植物中。 -
Each male gametophyte is just a few cells inside a grain of pollen. Each female gametophyte produces an egg inside an ovule.
::每只雄性野生植物只是一粒花粉里的几个细胞, 每一只雌性野生植物在卵卵内产出一个蛋。 -
Pollination must occur for fertilization to take place. Zygotes develop into embryos inside seeds, from which the next sporophyte generation grows.
::要想进行肥化,就必须进行授粉。 Zygotes 发展成种子内的胚胎,而下一代植物从种子中生长出来。
Review
::回顾-
State the functions of flowers and fruits in angiosperm reproduction.
::在血管生殖方面,花卉和水果的功能由国家承担。 -
Create your own cycle diagram to represent the life cycle of a daisy.
::创建您自己的循环图, 以代表菊花的生命周期 。
Resources
::资源 -
In flowering plants, the gametophyte generation takes place in a flower, which forms on the mature sporophyte plant.
