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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.

然而根中,它还是适用的。一些被子植物的根中,还现了第四种组织原,即calpytrogen,与根冠有关。

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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.

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

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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.

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

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

被子植物花粉管中殖细胞(应为原核译者注)分裂成两个配子的核。

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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%的植物被子植物

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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物有 30 万种。

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《分钟地科普(精选双语)

These angiosperms lost so much water into the air that as they spread, they brought their own rain with them.

被子植物在扩张过程中,虽然失去了么多的水分到空气,但他们也携带了自身的雨水。

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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.

被子植物当今最进化、最多样化、分布最广、适应性最强的植物群。

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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。

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VOA慢速英语_科技

Baker said angiosperms are more successful at reproducing than gymnosperms.

贝克说,被子植物比裸子植物在繁殖方面更成功。

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中高级英语短文

In the latest study, the team used micro-CT technology to scan the fossil and found that the interior contained inverted ovules, which is a key feature for determining angiosperms.

在最新的研究中,该团队使用微型 CT 技术扫描化石,发现内部包含倒置的胚珠,被子植物的关键特征。

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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

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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.

项研究解释了被子植物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

The researcher in charge of the study said that flowers and fruits are part of the angiosperm family.

负责项研究的研究员说,花和水果被子植物家族的一部分。

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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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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。

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开启地探索之旅

And so we have today the two basic types of trees – gymnosperms – the conifers also known as softwoods, and angiosperms, the flowering trees known as broadleafs or hardwoods.

所以今天我们就有了两种基本类型的树木——裸子植物——针叶树,也称为软木, 和被子植物, 开花的树木, 也称为阔叶树或硬木。

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博兹曼科学——生物

And 15% of angiosperms, which is all of the plants you're looking at came to be through polyploidy or a mistake in the chromosomes.

而15%的被子植物,即你所见到的所有植物,其形成过程涉及多倍体现象或染色体错误。

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VOA慢速英语_科技

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

被子植物进化出了高度多样性的果实类型,允许有效的种子传播。

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Life Noggin

This is because around 80 percent of the plants in the world are angiosperms, which are flowering plants.

因为世界上大约 80% 的植物被子植物,它们开花植物。

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复习

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

被子植物的简单形式,它们的长茎上带有封装的种子。

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PBS地-动物

Like the scorpionflies and lacewings, these true flies were thriving on the reproductive structures of gymnosperms, not angiosperms.

就像蝎蛉和草蛉一样,些真正的蝇类在裸子植物的繁殖结构上繁盛,而不被子植物。

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科拉诺斯动画科普

Marine meadows are made of seagrasses, a group of angiosperms, or flowering plants, that are completely aquatic.

海洋草甸由海草、一组被子植物或开花植物组成,它们完全水生的。

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科拉诺斯动画科普

As gymnosperms declined, angiosperms or flowering plants filled the niches  they left behind.

随着裸子植物的衰落,被子植物或开花植物填补了它们留下的生态位。

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