Generative nuclei The two gametic nuclei formed by the division of the generative cell in the pollen tube of angiosperms.
在被子植物花粉管中的生殖细胞（应为雄原核译者注）分裂成两个配子的核。
| 单词 | angiosperm |
| 例句 |
英语例句库
Generative nuclei The two gametic nuclei formed by the division of the generative cell in the pollen tube of angiosperms. 在被子植物花粉管中的生殖细胞（应为雄原核译者注）分裂成两个配子的核。 Heteranthery exists in several angiosperm families, such as Melastomataceae, Solanaceae, Lythraceae, Leguminosae and Pontederiaceae, but the aspects and extent of differentiation often vary in taxa. 异型雄蕊在野牡丹科、茄科、干屈菜科、豆科、雨久花科等多个科中都有分布,但其分化与程度常随类群而异。 Heteranthery exists in several angiosperm families, such as Melastomataceae, Solanaceae, Lytbraceae, Leguminosae and Pontederiaceae, but the aspects and extent of differentiation often vary in taxa. 异型雄蕊在野牡丹科、茄科、千屈菜科、豆科、雨久花科等多个科中都有分布，但其分化与程度常随类群而异。 In roots, however, the concept is still applied, and in some angiosperm roots a fourth histogen zone is recognized, the calpytrogen, which gives rise to the root cap. 然而在根中，它还是适用的。在一些被子植物的根中，还发现了第四种组织原，即calpytrogen，与根冠发生有关。 声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
原声例句
VOA慢速英语_科技 Flowering plants are also called angiosperms. 开花植物也被称为被子植物。 VOA慢速英语_科技 The research explains how angiosperms appeared and became widespread during the age of dinosaurs. 这项研究解释了被子植物是如何在恐龙时代出现并广泛分布的。 中高级英语短文 Angiosperms are the most evolved, diverse, widely distributed and adaptable group of plants today. 被子植物是当今最进化、最多样化、分布最广、适应性最强的植物群。 VOA慢速英语_科技 The team of scientists created a new tree of life for angiosperms. 科学家团队为被子植物创造了一棵新的“生命树”。 VOA慢速英语_科技 Angiosperms are plants that produce flowers and produce their seeds in fruits. 被子植物是开花并在果实中产生种子的植物。 VOA慢速英语_科技 About 80 percent of the world's plants are angiosperms. 世界上大约80%的植物是被子植物。 中高级英语短文 There are 300,000 species of extant angiosperms around the world. 世界上现存的被子植物有 30 万种。 VOA慢速英语_科技 The study identified two periods of diversification among angiosperms. 该研究确定了被子植物的两个多样化时期。 中高级英语短文 The researcher in charge of the study said that flowers and fruits are part of the angiosperm family. 负责这项研究的研究员说，花和水果是被子植物家族的一部分。 VOA慢速英语_科技 At that time, 80 percent of major angiosperm species arose. 当时，80%的主要被子植物物种出现了。 VOA慢速英语_科技 Baker said angiosperms are more successful at reproducing than gymnosperms. 贝克说，被子植物比裸子植物在繁殖方面更成功。 VOA慢速英语_科技 Gymnosperms and angiosperms both have seeds. 裸子植物和被子植物都有种子。 《分钟地球》趣味科普（精选双语） These angiosperms lost so much water into the air that as they spread, they brought their own rain with them. 这些被子植物在扩张过程中，虽然失去了这么多的水分到空气，但他们也携带了自身的雨水。 VOA慢速英语_科技 Angiosperms evolved a high diversity of fruit types, permitting effective seed spread. 被子植物进化出了高度多样性的果实类型，允许有效的种子传播。 科拉诺斯动画科普 Many insect species are also prolific pollinators, stimulating the reproduction of angiosperms or flowering plants. 许多昆虫物种也是多产的传粉者，刺激被子植物或开花植物的繁殖。 PBS地球-动物趣闻 But early angiosperms didn't have the reproductive structures that made a long proboscis necessary. 但是早期的被子植物不具备长长的喙所必需的生殖结构。 PBS Eons | fauna&flora For the angiosperms to take over, they had to develop relationships with pollinators. 为了让被子植物接管，它们必须 与传粉者建立关系。 PBS Eons | fauna&flora But early angiosperms didn’t have the reproductive structures that made a long proboscis necessary. 但早期的被子植物不具备 需要长喙的生殖结构。 复习 Grasses are simple forms of angiosperms that bear their encapsulated seeds on long stalks. 草是被子植物的简单形式，它们的长茎上带有封装的种子。 VOA慢速英语_科技 The study could help scientists better understand disease and pest resistance in angiosperms. 该研究可以帮助科学家更好地了解被子植物的抗病性和害虫抵抗力。 |
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