| 1. | Its native gymnosperms could evolve into a few species capable of growing in the warm, moist forests of queensland . 本地的裸子植物可进化成能在昆士兰温暖湿润林区的树种。 |
| 2. | The occurrence of haploid endosperm in the gymnosperms provides a sound basis for further investigations into progenies . 裸子植物中单倍体胚乳的存在,为进一步对于后代的研究提供良好的基础。 |
| 3. | Most angiosperm ovules possess two integuments , while gymnosperms usually have only one 大多数被子植物的胚珠有两层珠被,而裸子植物通常只有一层。 |
| 4. | Most gymnosperms retain archegonia except for the most advanced genera gnetum and welwitschia 除了买麻藤属和百岁兰属以外大多数裸子植物还保留有颈卵器。 |
| 5. | Antherozoid ( spermatozoid ) the male gamete of algae , some gymnosperms , and the non - seed - bearing plants 游动精子:藻类,某些裸子植物和没有种子形成的植物中的雄性配子。 |
| 6. | The process is restricted to certain angiosperms but a primitive form is known from some gymnosperms 此过程仅限于某些被子植物,但从裸子植物中也发现了一些较原始的形式。 |
| 7. | 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。 |
| 8. | However , the variation patterns of rdna in gymnosperms are little known because of the limited sequence data 但是在裸子植物中由于研究资料的匮乏,使我们对裸子植物rdna的变异模式了解甚少。 |
| 9. | Bract scale the structure found in large numbers in the female cone of gymnosperms , each bearing an ovuliferous scale in its axil 苞鳞:在裸子植物的雌球果中大量存在的结构,每个苞鳞都包含一个珠鳞。 |
| 10. | Enclosure of the nucellus by the integuments is incomplete , the embryo sac or , in gymnosperms , to the archegonium 珠被并不是将珠心完全封闭,而是留有珠孔以便受精时花粉管进入胚囊,或裸子植物的藏卵器。 |