History of Flora and Lifecycle of Ferns and Conifers

The first plant of the flora history, Rhyniophyte Flora, was the first vascular plant dating back to the Devonian period (from 416 to 359.2 million years ago) (Gradstein, Ogg and Smith, pp. 33-56) . A simple shoot rising from the crawl axis is characteristic of these plants. The shoot branches into two, sometimes ending the sporangia, so it shows branched nature. These are spore-containing capsules used for reproduction. In addition, these plants do not have leaves, seeds, flowers or roots.

Ferns and conifers grow spores and are all very similar in that they all undergo fertilization and meiosis. The big difference is that conifers are heterogeneous and ferns are homogeneous. Softwoods also have gametophytes on their life cycle, but ferns have sporozoites.

There are plenty of ferns, ginkgo biloba, and sago in plants. I saw some conifers, but they were not dominant like the middle Cretaceous. There are few angiosperms, but I have found some very early examples. It is strange that you are visiting a world with few flowers. The land is covered with plants, but these are the strangest plants I have ever seen. Some plants are as tall as small trees, but the entire ground is covered with green. But they did not seem to be leaving. I can best explain these plants as a number of branches. However, not all of them have the same branching mode. Some contain a lot of upward forks. Others have straight suitcases, and the branches of the small wheels stick directly to the sides. All of these plants seem to breed through spores - I do not see a single seed plant

Plants are multicellular, mainly photosynthetic eukaryotes in the plant world. They form green plants (Latin name "green plants") including flowering plants, conifers and other gymnosperms, ferns and their allies, Flammulina velutipes, moss, moss and green algae, and red and brown algae Not included. Historically, plants have been regarded as one of the two kingdoms, including all living creatures that are not animals, and all algae and fungi are considered plants. However, all current definitions of plants exclude fungi and some algae, as well as prokaryotes (archaea and bacteria).