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  • General

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  • Gymnosperms的生命周期

    Pine cones hanging from a branch, showcasing their petal-like shape and structure.

    Do pine trees produce flowers?
    ::松树生花吗?

    Of course not. But look closely at these pine cones. Notice the shape. Can you see the " petals ?" They do seem oddly similar to flowers . These pine cones have a prominent role in the gymnosperm . So what is the function of a pine cone?
    ::当然没有, 但是请仔细看这些松果。 注意形状。 您能看到“ 豆子 ” 吗 ? 这些松果似乎与鲜花相似。 这些松果在体操中扮演着突出角色。 那么松果的功能是什么?

    Life Cycle of Gymnosperms
    ::Gymnosperms的生命周期

    Gymnosperms are that produce seeds in cones . Examples include conifers such as pine and spruce trees. The gymnosperm life cycle has a dominant sporophyte generation. Both gametophytes and the next generation’s new sporophytes develop on the sporophyte parent plant. Figure is a diagram of a gymnosperm life cycle.
    ::Gymnosperms是种锥形种子的产物。 例子包括松树和松树等锥形植物。 体操周期生命周期具有占支配地位的脊髓灰质素一代。 游戏植物和下一代新的脊髓灰质素都是在脊髓灰质素母植物上开发的。 图是体操周期的图表。

    The life cycle stages of gymnosperms, including cones, gametophytes, and fertilization.

    The gymnosperm life cycle follows the general plant life cycle, but with some new adaptations. Can you identify them?
    ::健身房的生命周期遵循一般的植物生命周期,但有一些新的适应。你能识别它们吗?

    Cones form on a mature sporophyte plant. Inside male cones, male spores develop into male gametophytes. Each male gametophyte consists of several enclosed within a grain of pollen . Inside female cones, female spores develop into female gametophytes. Each female gametophyte produces an egg inside an ovule .
    ::在成熟的麻风植物中形成锥形。在雄锥体中,雄锥体的螺旋会发展成雄性游戏植物。每个雄性游戏植物体由几颗附在一粒花粉中。在雌性锥体中,雌性螺旋会发展成雌性游戏植物。每个雌性游戏植物体在卵卵内产卵。

    Pollination occurs when pollen is transferred from a male to female cone. If then travel from the pollen to an egg so can occur, a diploid zygote results. The zygote develops into an embryo within a seed, which forms from the ovule inside the female cone. If the seed germinates, it may grow into a mature sporophyte tree, which repeats the cycle.
    ::当花粉从雄性向雌性锥体转移时,即发生污染。如果从花粉到卵,那么,就会产生低温的zygote结果。 zygote在种子中发展成胚胎,种子从雌性锥体的卵子中形成。 如果种子发芽,它可能长成成熟的花粉树,重复循环。

      

     

    Summary
    ::摘要

    • In gymnosperms, the gametophyte generation takes place in a cone, which forms on the mature sporophyte plant.
      ::在健身房里, 游戏植物的一代 发生在一个锥体中, 形成在成熟的脊椎植物上。
    • 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

    1. Describe how gymnosperms use cones to reproduce.
      ::描述体操孔利用锥形来繁殖的方式。
    2. Create your own cycle diagram to represent the life cycle of a gymnosperm.
      ::创建您自己的循环图, 以代表体操运动的生命周期 。