|
所在平台: Udemy |
课程主页: https://www.udemy.com/course/bryophytes/
课程评论：没有评论
课程名称：苔藓植物 (Bryophytes) 课程概述： 本课程探讨陆地植物的起源与演化，追溯其从绿藻 (Chlorophyta) 分化而来的历程。课程将详细介绍陆地植物与绿藻及其他高等植物类群共有的特征。 课程重点： * **陆地植物的关键演化特征**: 绿藻缺乏陆地植物的关键特征，例如孢子壁、孢子囊、多细胞配子囊、受精卵发育依赖以及顶端分生组织。 * **陆地环境的适应**: 课程将阐述植物如何演化以适应陆地环境。 * **维管植物与非维管植物的区别**: 植物类群可以通过是否拥有发达的维管组织系统进行区分。 * **维管植物**: 拥有复杂的维管组织系统，用于在植物体内输送水分和养分。 * **非维管植物**: 缺乏发达的输导系统，也被称为苔藓植物 (Bryophytes)。 * **苔藓植物的特征**: * 以进行性地命名为苔藓植物，例如：地钱 (Marchantia)、葫芦藓 (Pogonatum)、角苔 (Antheroceros)。 * 苔藓植物在某些演化性状上与维管植物相似，但缺乏维管植物的许多创新，例如真正的茎、根和叶。 课程大纲：无
Land plants have a history from the phylogeny as they have evolved from the green algae (Chlorophyta). Land plants have several characteristics in common with the chlorophytes and and other advanced plant groups. This course tells you detailed information about the seedless, non-vascular plants.Chlorophyte algae lack key traits of land plants, walled spores produced in sporangia, multicellular gametangia, dependent embryo and apical meristem. They evolved in the terrestrial environment. Plant groups can be distinguished based on the presence or absence of an extensive system of vascular tissue. Based on that there are two major groups of plants the can be seen; they are Vascular plants and Non-vascular plants.One way to distinguish a group of plants is to see whether or not they have an extensive system of vascular tissue that transport water and nutrients throughout the plant body. Most present day plants do have a complex vascular tissue system and therefore, are called vascular plants. Plants that do not have an extensive transport system are described as non vascular plants. Non vascular plants are informally named as Bryophytes. e.g. Marchantia, Pogonatum, Antheroceros Bryophytes share some derived traits with vascular plants, but lackin many innovations of vascular plants such as presence of true stems, roots and leaves.
