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- The quantity of gymnospermous pollen is not high, and the ptetidophyte spore is sporadic in the assemblage. 裸子植物花粉含量低，蕨类植物孢子零星。
- 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;
- There is a high pollen count in the air. 空气中有很高的花粉计数。
- gymnosperm pollen 裸子植物花粉
- Stamen is in the middle of a flower and may produce pollen. 雄蕊长在花的中央，能产生花粉。
- A microscopic fossil, as of a pollen grain or unicellular organism. 微体化石一种微小的化石，如花粉粒或单细胞有机体的化石
- The workers have little pollen baskets on their legs. 工蜂脚上有装花粉的小"篮子"。
- Anther is a part of a flower that contains the pollen. 花药是花的雄蕊上带花粉的部分。
- Gymnosperm Jisheng is the Jurassic period. 侏罗纪是裸子植物的极盛期。
- The innermost wall of a spore or pollen grain. 内壁孢子或花粉粒最深处的壁
- Pollen sterile blossoms lack normal turgor. 花粉不育的花朵缺乏正常的膨压现象。
- The pollen is shed directly on the stigma. 花粉直接散落在柱头上。
- Some people have an allergy to pollen. 一些人对花粉有过敏反应。
- Nectar and pollen are very nutritious. 花蜜和花粉是很有营养的。
- Pollinated by wind-dispersed pollen. 风媒传粉的通过风的飘散来传播花粉的
- 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。
- Both the pollen grains and the gynoecia are active. 花粉粒和雌蕊都具有活力。
- Seeds and pollen are spread by the wind. 种子和花粉是随风传播的。
- There is a high pollen count inthe air. 空气中有很高的花粉计数。
- A study on pollen morphology of the genus Vitis L. 葡萄属植物花粉形态的研究。
