牛牛app代理

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                      1. 光蕨类植物
                        2014-04-22 19:12:06   来源:化石网   评论:0 点击:

                        裸蕨类植物中最早出现的是光蕨类,它们的躯体非常矮小,高不过10厘米,茎很细弱,直径不到2毫米,茎作两歧式分叉,分叉不多。从光蕨又发展出来两类型,一种是莱尼蕨型,另一种是工蕨型。

                            LUOJUELEIZHIWUZHONGZUIZAOCHUXIANDESHIGUANGJUELEI,TAMENDEQUTIFEICHANGAIXIAO,GAOBUGUO10LIMI,JINGHENXIRUO,ZHIJINGBUDAO2HAOMI,JINGZUOLIANGQISHIFENCHA,FENCHABUDUO。CONGGUANGJUEYOUFAZHANCHULAILIANGLEIXING,YIZHONGSHILAINIJUEXING,LINGYIZHONGSHIGONGJUEXING。

                        相关热词搜索:光蕨类 植物

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