A nonvascular plant, it lacks an elaborate root-and-shoot anatomy; it has no roots to speak of.
作为一种非维管植物,它缺乏精细的根茎结构,它没有可称为“根”的部分。
单词 | Nonvascular plants |
释义 |
Nonvascular plants
原声例句
《卫报》(文章版) A nonvascular plant, it lacks an elaborate root-and-shoot anatomy; it has no roots to speak of. 作为一种非维管植物,它缺乏精细的根茎结构,它没有可称为“根”的部分。
中文百科
非维管植物 Non-vascular plant(重定向自Nonvascular plants)
![]() ![]() 非维管束植物(或作非维管束植物)是对没有维管束(木质部和韧皮部)的植物(包括绿藻)的总称。虽然非维管束植物缺乏此类特殊的组织,但一部份的非维管束植物会有特化来在体内输送水份的组织。 非维管束植物没有根茎叶等器具,因为此类结构是由含有维管束来定义的。地钱的裂片可能看起来很像叶子,但因为它们没有木质部或韧皮部,所以不是真正的叶子。同样地,苔藓和藻类也没有此类组织。
英语百科
Non-vascular plant 非维管植物(重定向自Nonvascular plants)
![]() ![]() Non-vascular plants are plants without a vascular system consisting of xylem and phloem. Although non-vascular plants lack these particular tissues, many possess simpler tissues that are specialized for internal transport of water. Non-vascular plants do not have a wide variety of specialized tissue types. Mosses and leafy liverworts have structures that look like leaves, but are not true leaves because they are single sheets of cells with no cuticle, no stomata, no internal air spaces and have no xylem or phloem. Consequently, they are unable to control the rate of water loss from their tissues and are said to be poikilohydric. |
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