cycad造句

• Cycads and ginkgo have motile sperm , unlike gnetophytes and conifers , which produce pollen
  苏铁和银杏具活动精子可区别于买麻藤和松柏类，它们不产生花粉。
• They expected to find evidence of well - known late cretaceous vegetation such as conifers and cycads
  他们原本期望发现晚白垩世时期著名植物如针叶树和苏铁存在的证据。
• Two important aboriginal foods are the fruit of the cycad palm , and a large nutritious yam
  澳洲土著人有两种重要的食物：一种是铁树目裸子类棕桐树的果子，另一种是又大又有营养的山药。
• An attractive fern , at first glance it looks like a plant of cycad and it is very suitable for cultivation as bonsai
  本种主干直立，羽叶婆娑，极似苏铁类植物，具有重要的观赏价值，适合作盆景。
• There are four widely different living groups : the cycads , ginkgo , conifers , gnetophytes , and several fossil groups
  分为四个不同的类群：苏铁类、银杏类、松柏类、买麻藤类植物以及一些化石类群。
• The cycads provide an ample and reliable source of food from june until october , while the yam is available for an even longer period
  每年的六月到十月，棕桐树的果子为人们提供了丰富而可靠的食物来源，而后者的获得时间甚至更长。
• Coralloid roots a type of root regularly produced by cycads , which contains symbiotic nitrogen - fixing cyanobacteria in root nodules , giving the roots a knobbly coral - like appearance
  珊瑚状的根：由苏铁类植物产生的一种类型的根，根瘤中含有共生的固氮蓝细菌，使根形成珊瑚状的有节的形状。
• 25 species and 3 variations of 6 genus , about 16 percents of zamiaceae in the family , were introduced to xiamen botanical garden since 1975 to enrich the cycad diversity in china
  摘要厦门植物园自1975年至今已引种保存泽米铁科6属25种和3个变种，约占世界泽米铁科植物种类的16 % ，丰富了我国的苏铁目植物资源。
• A valid export permit issued by a competent authority of the exporting country is required . the more commonly traded artificially propagated endangered plant species include cacti , aloes , pitcher plants , venus fly - trap , cycads , cyclamens and orchids
  本港较常见买卖的人工培植濒危植物物种，有仙人掌、芦荟、猪笼草、捕蝇草、苏铁、兔仔花及兰花品种等。
• Climatological data from fossil pollen , leaves and wood indicate that the cretaceous forests of northern alaska consisted of a mixed canopy that included deciduous conifers with an understory of flowering plants , ferns and cycads
  由花粉、叶子和木材化石?集到的气候资料显示，阿拉斯加北部的白垩纪森林有混合型林冠，包括了落叶针叶林以及林下的开花植物、蕨类和苏铁。
• Cycadophyta ( cycads ) a phylum of cone - bearing gymnosperms ( about 75 living species ) with palmlike compound leaves and special coralloid roots at or near the ground surface , which contain symbiotic nitrogen - fixing cyanobacteria
  苏铁纲（苏铁类植物） ：包含球果的一类裸子植物（现存种大约有75种） ，它们具有掌状的复叶，在近地面处有特殊的珊瑚状的根，根内含有共生的固氮蓝细菌。