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Generative nuclei The two gametic nuclei formed by the division of the generative cell in the pollen tube of angiosperms.

在被植物粉管中的生殖细胞(应为雄原核译者注)分裂成两的核。

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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、茄、干屈菜、豆、雨久中都有分布,但其分化与程度常随类群而异。

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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、茄、千屈菜、豆、雨久中都有分布,但其分化与程度常随类群而异。

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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。在一些被植物的根中,还发现了第四种组织原,即calpytrogen,与根冠发生有关。

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VOA慢速英语_科技

Flowering plants are also called angiosperms.

开花植也被称为被子植

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VOA慢速英语_科技

The research explains how angiosperms appeared and became widespread during the age of dinosaurs.

这项释了被子植是如何在恐龙时代出现并广泛分布的。

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中高级英语短文

Angiosperms are the most evolved, diverse, widely distributed and adaptable group of plants today.

被子植是当今最进化、最多样化、分布最广、适应性最强的植群。

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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创造了一棵新的“生命树”。

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VOA慢速英语_科技

Angiosperms are plants that produce flowers and produce their seeds in fruits.

被子植是开花并在果实中产生子的植

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VOA慢速英语_科技

About 80 percent of the world's plants are angiosperms.

世界上大约80%的植是被子植

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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有 30

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VOA慢速英语_科技

The study identified two periods of diversification among angiosperms.

确定了被子植的两个多样化时期。

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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.

负责这项员说,花和水果是被子植家族的一部分。

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VOA慢速英语_科技

At that time, 80 percent of major angiosperm species arose.

当时,80%的主要被子植出现了。

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VOA慢速英语_科技

Baker said angiosperms are more successful at reproducing than gymnosperms.

贝克说,被子植比裸子植在繁殖方面更成功。

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VOA慢速英语_科技

Gymnosperms and angiosperms both have seeds.

裸子植和被子植都有子。

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《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。

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VOA慢速英语_科技

Angiosperms evolved a high diversity of fruit types, permitting effective seed spread.

被子植进化出了高度多样性的果实类型,允许有效的子传播。

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科拉诺斯动画科普

Many insect species are also prolific pollinators, stimulating the reproduction of angiosperms or flowering plants.

许多昆虫也是多产的传粉者,刺激被子植或开花植的繁殖。

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PBS地球-动趣闻

But early angiosperms didn't have the reproductive structures that made a long proboscis necessary.

但是早期的被子植不具备长长的喙所必需的生殖结构。

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PBS Eons | fauna&flora

For the angiosperms to take over, they had to develop relationships with pollinators.

为了让被子植接管,它们必须 与传粉者建立关系。

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PBS Eons | fauna&flora

But early angiosperms didn’t have the reproductive structures that made a long proboscis necessary.

但早期的被子植不具备 需要长喙的生殖结构。

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复习

Grasses are simple forms of angiosperms that bear their encapsulated seeds on long stalks.

草是被子植的简单形式,它们的长茎上带有封装的子。

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VOA慢速英语_科技

The study could help scientists better understand disease and pest resistance in angiosperms.

可以帮助科学家更好地了被子植的抗病性和害虫抵抗力。

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