一、菊花、海棠,牡丹等野生原始种花卉都是单瓣,花色也比较单一,经过人工栽培繁殖后大多数都变为重瓣花,而且花色绚丽多彩,这是为什么? 二、矮牵牛是牵牛花的矮生种吗?君子兰种子刚刚长出来的小白芽是种子的哪一部分? 三、我国兰花常见的有哪些种类?兰属植物经过植物学家吴应祥、陈心启的研 First, the chrysanthemums, begonias, peonies and other wild species of the original flowers are single, the color is relatively simple, after the majority of artificial breeding have become double petals, and colorful and colorful, which is why? Second, petunias Is the dwarf species of morning glory? Clivia seeds just grow out of which part of the seeds of small white? Third, what are the common species of orchids in China? Orchid plants after botanists Wu Yingxiang, Chen Xin research