gymnosperm

Gymnosperm Jisheng is the Jurassic period.

侏罗纪是裸子植物的极盛期。

She said, silver fir is a gymnosperm, Pinaceae, evergreen trees.

她称，银杉属裸子植物，松科，常绿乔木。

Gymnosperm A general term for any seed plant except the angiosperms, characterized by bearing naked seeds.

裸子植物：被子植物以外的种子植物统称裸子植物，以种子裸露为特征。

Kuo S.R.,Wang T.T,Huang T.C.Karyotype analysis of some Formosan gymnosperm[J].Taiwania,1972,17:66.

李玉阁,郭卫红,吴伯骥.4种国产兰属植物的核型比较研究[J].西北植物学报,2002,22(6):1443.

Gymnosperm have 3 families,3 genera and 12 species and dominant Angiosperm have 56 families,300 genera and 951 species.

其中裸子植物3科、3属、12种, 被子植物56科、300属、951种。

Jurassic in the plant community, gymnosperm in the category of cycads, conifers and ginkgo category.

在侏罗纪的植物群落中，裸子植物中的苏铁类，松柏类和银杏类。

Among of which,there are 7 species of pteridophyte,3 species of gymnosperm and 403 species of angiosperm.

其中蕨类植物7种,裸子植物3种,被子植物403种。

Volatiles from Two Gymnosperm Fossils: Miocene Leaves of Metasequoia glyptostroboides and Early Cretaceous Seed Cone of Pityostrobus spp.

中新世水杉叶片和白垩纪松型球果化石中的挥发性成分。

In Mesozoic, Guangdong flora had a big change, the gymnosperm was prosperous, but it was evolved from the late Paleozoic Cathaysian flora as a whole.

中生代，广东植物区系成分发生了很大的变化，裸子植物大量繁盛，但总体上是在本区晚古生代华夏植物区系的基础上演化而来的。

Plant is from ocean to continent about 4 million years ago. The evolution of plant undergoes Pteridophyte era、gymnosperm era and Angiosperm era.

植物是从4亿年前从海洋登上陆地的。植物的演化经历了蕨类植物时代、裸子时代和被子植物时代。

From the present results, we considered that tracheary elements that conduct water and mineral in ferns and gymnosperm are tracheids.

由此可以推测蕨类植物和裸子植物中输导水分和矿物质的管状分子主要为管胞。

Meanwhile the wood anatomic features and the key to genus of living gymnosperm in China are presented for scientifically naming the fossil woods.

为此提出了现代木材属的解剖特征和检索表，目的在于使化石木的命名科学化。

In which there were gymnosperm 3 families 3 genera 12 species and dominant angiosperm 56 families 300 genera 951 species.

其中裸子植物3科3属12种，被子植物56科300属951种。

Guangdong flora became more complex and multiplex from the beginning of Tertiary.The angiosperm developed in mass and dominated instead of gymnosperm.

从第二纪开始，广东植物区系成分变得更加复杂多样，被子植物大量发展，取代了裸子植物占据统治地位。

Vessels are found in most angiosperms, the gymnosperm order Gnetales, and a few other plants such as bracken (Pteridium aquilinum).

绝大多数被子植物、买麻藤目Gnetales和少数一些植物如欧洲蕨(Pteridiumaguilinum)具有导管。

The mature microspore or developing male gametophyte of a seed plant, produced in the microsporangium of a gymnosperm or in the anther of an angiosperm.

花粉 Pollen 由裸子植物的小孢子囊或被子植物的花粉产生的成熟小孢子或正在发育的雄配子体。

There are 7 families, 18 genus, 49 species belongs to gymnosperm in this region, which are 70%, 45%, 25.39% of the country, 63.64%, 31.58%, 7.31% of the world respectively.

该林区有裸子植物7科18属49种，分别占全国同类别的70.00%、45.00%、25.39%，占世界同类别的63.64%、31.58%、7.31%；

China has the richest flora of gymnosperm in the world, which is crucial for understanding the change of global distribution and phylogeny of gymnosperm.

摘要中国拥有世界上最丰富的裸子植物区系，对理解全球裸子植物分布变化与系统演化具有重要意义。

Observe and familiarize species of gymnosperms in the campus and build an idea about the concept of gymnosperm.

实验目的Purposes：通过室外观察，认识校园常见裸子植物，掌握它们所属的科，了解裸子植物的概念。

He also observed that gymnosperm ovules were not enclosed in an ovary wall, leading to the establishment of one of the basic differences between angiosperms and gymnosperms.

他还观察到裸子植物的胚珠并不是被子房壁包围，这个发现直接导致了被子植物和裸子植物之间最根本的几点区别的建立。

Through investigation to West Lake Spot in HuiZhou, it showed that the pot had 127 species woody plant which belong to 48 families, including 6 families 8 species gymnosperm and 42 families 118 species angiosperm.

摘要通过对惠州市西湖风景区的木本植物资源的调查，结果表明该景区的木本植物种类总类为48科127种，其中裸子植物有6科8种，被子植物有42科118种。

Structure of wood in Gymnosperm

裸子植物木材的结构

Programmed Cell Death in Sexual Reproduction of Gymnosperm

裸子植物有性生殖过程中的细胞程序化死亡

Stem morphology of a gymnosperm

裸子植物茎外形

Compare of wood between the Gymnosperm and Angiosperm

裸子植物和被子植物木材的比较

A ANALYSIS ON THE FLORA AND GEOGRAPHY OF GYMNOSPERM FROM GANSU PROVINCE

甘肃裸子植物区系地理分析

any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves.

苏铁科热带植物；长有蕨类叶片，树干无枝。

any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves

苏铁科热带植物；长有蕨类叶片，树干无枝

Keywords coal;pteridophyta spore;gymnosperm pollen;trace element;major element;correlation;

煤;蕨类植物孢子;裸子植物花粉;微量元素;常量元素;相关性;

Plant species, 162 species of fern plants, gymnosperm nine, 1216 angiosperm species;

植物种类繁多，蕨类植物162种，裸子植物9种，被子植物1216种；

According to different principles，there are 3 pteridophyte species and 14 gymnosperm species and 35 angiosperm species；

按不同的分类标准，这些珍稀濒危植物中有蕨类植物3种，裸子植物14种，被子植物35种；

gymnosperm (fossil)

裸子植物（化石）

gymnosperm

n. 裸子植物

gymnosperm fossil

裸子化石

gymnosperm pollen

裸子植物花粉