Spores are one of the evolutionary stages of the plant world, providing an understanding of the history of development. And the descendants of the spores began to arise at the end of the mesozoic, when the first underdeveloped flowering plants appeared, who won the whole world during the Cenozoic.
And now mosses, plans and horsetails are familiar to many and are found almost everywhere, since these representatives of a special, ancient and very large group of plants still exist. All of them, unlike coatedseeded, do not form flower buds, fruits and seeds, but without them the existence of flowering would simply be impossible.
General characteristics of mosses, plain and horsetail
If we talk about mosses, their distribution territory is extremely extensive: these plants are absent only in seas and salt marshes, preferring to settled in the tundra, forests and swampy territories, and some were quite successfully able to live the bottom of the water. Small species of mosses have chosen stones, bark of plants, sandy soil for existence, forming peculiar turfs of dense property.
If we are talking about plainlike ones, then they are attributed to one of the most ancient representatives of the flora: the heyday of their development and diversity was at the end of the Paleozoic, when representatives of this species were called sigilles or scales. These species also do not form flowers, and their sporangia intended for sporification are formed in the sinuses of leaves. Moreover, the disputes themselves are distinguished by a long period of ripening, and are able to grow into gametophytes exclusively in wet conditions.
Plaun Baranets
Speaking about the horsetail, their name, articulate, quite clearly conveys the features of their structure and structure: the shoots of any of the types of alert are structurally designed stems with the mandatory presence of internodes and nodes, which is characterized by muttering the location of the luminous leaves of a small size.
A colorful horsetail
It is precisely such stems that modern horsetails differ from any otheressless representatives of higher plants, and on the same sign they can be correlated with algae.
The horsetshaped looks like a kind of, collected from details, a children’s designer and it is precisely by their jointness that are significantly distinguished against the background of any other herb.
