gametophytic

简明释义

英[ˌɡæməˈtɑfɪtɪk]美[ˌɡæməˈtɑfɪtɪk]

配子体的

英英释义

单词用法

同义词

反义词

例句

1.Experiments of various light intensity were conducted to compare the effect on growth of Laminaria gametophytic clone in the condition of suspending culture and stilling culture.

本试验研究了在充气悬浮培养及静置培养条件下，不同光照强度对海带配子体克隆生长的影响。

2.Experiments of various light intensity were conducted to compare the effect on growth of Laminaria gametophytic clone in the condition of suspending culture and stilling culture.

本试验研究了在充气悬浮培养及静置培养条件下，不同光照强度对海带配子体克隆生长的影响。

3.The gametophytic 配子体的 phase is crucial for sexual reproduction in many plants.

在许多植物中，gametophytic 配子体的 阶段对有性繁殖至关重要。

4.In mosses, the dominant stage of the life cycle is the gametophytic 配子体的 generation.

在苔藓中，生命周期的主导阶段是gametophytic 配子体的 代。

5.The gametophytic 配子体的 structure of liverworts is quite different from that of flowering plants.

肝wort的gametophytic 配子体的 结构与开花植物的结构相差甚远。

6.Researchers studied the gametophytic 配子体的 development of ferns to understand their reproductive strategies.

研究人员研究了蕨类植物的gametophytic 配子体的 发育，以了解它们的繁殖策略。

7.In bryophytes, the gametophytic 配子体的 generation is independent and photosynthetic.

在苔藓植物中，gametophytic 配子体的 代是独立的并且能够进行光合作用。

作文

The study of plant biology often leads us to explore various life cycles and reproductive strategies. One fascinating aspect of this field is the concept of the gametophyte phase, which is crucial in understanding how plants reproduce and evolve. The term gametophytic refers to the stage in the life cycle of certain plants, fungi, and algae where the organism produces gametes, which are the reproductive cells necessary for sexual reproduction. This phase is particularly prominent in non-flowering plants such as mosses and ferns, where the gametophytic generation is dominant and independent from the sporophyte generation.In the life cycle of these plants, the gametophytic stage begins when spores germinate and develop into a multicellular structure known as the gametophyte. This structure is usually haploid, meaning it contains only one set of chromosomes. The gametophyte then produces gametes through mitosis, which can be either male or female. In many cases, the male gametes are motile, allowing them to swim through water to reach the female gametes for fertilization.The significance of the gametophytic phase cannot be overstated. It represents a critical transition in the life cycle of plants, enabling genetic diversity through sexual reproduction. Furthermore, the environment in which these organisms thrive often dictates the success of their reproductive strategies. For instance, in moist habitats, the mobility of male gametes allows for effective fertilization, while in drier conditions, other strategies such as wind pollination may come into play.An interesting example of gametophytic dominance can be seen in mosses. In these plants, the gametophyte is the green, leafy structure that we commonly recognize. The sporophyte, which arises from the fertilized egg, is typically dependent on the gametophyte for nutrition and support. This unique relationship highlights the evolutionary adaptations that have allowed mosses to thrive in diverse environments.In contrast, flowering plants exhibit a different strategy. While they also have a gametophytic stage, it is often reduced and less conspicuous. In angiosperms, the male gametophytic phase is represented by pollen grains, which contain the male gametes, while the female phase is represented by the embryo sac within the ovule. This reduction in the gametophytic stage reflects an evolutionary trend towards more efficient reproductive strategies, allowing flowering plants to occupy a wide range of ecological niches.Understanding the gametophytic phase not only enriches our knowledge of plant biology but also has practical implications in agriculture and horticulture. By manipulating the conditions that favor the gametophyte stage, scientists can enhance the breeding programs for crops, leading to improved yields and resilience against environmental stresses.In conclusion, the gametophytic stage is a vital component of the plant life cycle, illustrating the complexity and diversity of reproductive strategies in the plant kingdom. As we continue to study these fascinating organisms, we gain insights that can help us better understand the intricate web of life on Earth and the evolutionary processes that shape it.

植物生物学的研究常常引导我们探索各种生命周期和繁殖策略。这个领域中一个迷人的方面是配子体阶段的概念，这对于理解植物如何繁殖和进化至关重要。术语gametophytic指的是某些植物、真菌和藻类生命周期中的一个阶段，在这个阶段，生物体产生生殖细胞，即进行有性繁殖所需的配子。这个阶段在苔藓和蕨类植物等非开花植物中尤为明显，其中gametophytic世代是主导的，并且与孢子体世代独立。在这些植物的生命周期中，gametophytic阶段始于孢子发芽并发育成一个多细胞结构，称为配子体。这个结构通常是单倍体的，意味着它只包含一套染色体。配子体随后通过有丝分裂产生配子，这些配子可以是雄性或雌性。在许多情况下，雄性配子是可运动的，使它们能够通过水游动到达雌性配子进行受精。gametophytic阶段的重要性不言而喻。它代表了植物生命周期中的一个关键转变，通过有性繁殖促进遗传多样性。此外，这些生物体所生存的环境往往决定了它们繁殖策略的成功。例如，在潮湿的栖息地中，雄性配子的运动性使得有效受精成为可能，而在干燥的条件下，风授粉等其他策略可能会发挥作用。在苔藓中，可以看到gametophytic主导的一个有趣例子。在这些植物中，配子体就是我们常见的绿色叶状结构。由受精卵产生的孢子体通常依赖于配子体提供营养和支持。这种独特的关系突显了苔藓能够在多样环境中繁荣的进化适应性。相比之下，开花植物展示了不同的策略。虽然它们也有gametophytic阶段，但通常是缩小且不太显眼的。在被子植物中，雄性gametophytic阶段由花粉粒代表，花粉粒中包含雄性配子，而雌性阶段则由胚囊代表。这种gametophytic阶段的缩小反映了一种向更高效繁殖策略的进化趋势，使开花植物能够占据广泛的生态位。理解gametophytic阶段不仅丰富了我们对植物生物学的知识，还有实际意义，特别是在农业和园艺方面。通过操控有利于配子体阶段的条件，科学家可以增强作物的育种计划，从而提高产量和抵御环境压力的能力。总之，gametophytic阶段是植物生命周期的重要组成部分，展示了植物王国中繁殖策略的复杂性和多样性。随着我们继续研究这些迷人的生物体，我们获得的见解将帮助我们更好地理解地球上生命的复杂网络以及塑造它的进化过程。