许多动物与植物都搭乘宇宙飞船或航天飞机到太空里兜了一圈,在太空里都表现了与在地面上下同的特征。然而,苔藓随着航天飞机到了太空中之后,却让科学家感到不可思议:它们的假根变成了螺旋型的了。苔藓是一种最简单最原始的高等植物,是高等植物中惟一没有维管束的一类,因此植物体都很矮小,一般不超过10厘米。它们有茎、叶的分 Many animals and plants take a space shuttle or space shuttle into space and show their features in space. However, after the space shuttle arrived in space, Moss made scientists wonder: Their fake roots became spiral. Moss is one of the simplest and most primitive higher plants. It is the only species in higher plants that does not have vascular bundles. Therefore, the plants are very short and usually do not exceed 10 cm. They have stems and leaves