[plant classification] what are the plant classifications

There are many classification of plants, some friends may not have a special understanding of this, today for you to briefly introduce the classification of plants, let's learn about it.

What is the classification of plants?

1. Gymnosperms

Gymnosperms are primitive seed plants with a long history of occurrence and development. The first gymnosperms appeared in the Paleozoic era, and they were the main plants spread across all continents from the Mesozoic to the Cenozoic. Gymnosperms are mostly trees, a few shrubs or vines, usually evergreen, leaves needle-shaped, linear, scaly, rarely flattened broad leaves (such as bamboo and cypress). Most of the secondary xylem have tracheids and few have ducts such as ephedra.

2. Angiosperms

Plant classification about 100 million years ago, gymnosperms developed from prosperity to decline, and angiosperms became the most widely distributed and most diverse plant on earth. Angiosperms are also called flowering plants, flowering plants, they have real flowers, these beautiful flowers are important organs for their reproduction, but also they are different from gymnosperms and other plants. There are more than 10, 000 genera and 300000 species of angiosperms, accounting for half of the plant kingdom. It can be said that many flowers and plants we see belong to angiosperms.

3. Bryophytes

It has important economic value to human beings and can be used in agriculture, horticulture and energy.

4. Ferns

Ferns are the general name of woody plants growing in the lowlands during the Devonian period. They need water as part of the regeneration cycle, and from then on they have derived a variety of different species. Today, they are still a kind of plants with strong vitality. Many ferns are graceful and have high ornamental value. They are famous foliage plants. Such as Dryopteris, Alsophila spinulosa, pod fern, kidney fern and so on, especially Boston fern.

5. Algae

Including several different types of organisms that produce energy by photosynthesis. It is generally considered to be simple plants, and some algae are related to higher plants. Although other algae seem to have the ability to get photosynthesis from blue-green algae, they have independent branches in evolution. At present, there are about 2100 genera and 27000 species of algae. According to the pigments, cellular structure, reproductive methods and the structure of the organs prohibited by ☆, it can be divided into Chlorophyta, Cyanophyta, Chlorophyta, Chrysophyta, Xanthophyta, Bacillariophyta, Pyrrophyta, Cyanophyta, Phaeophyta and Rhodophyta.

What are the common angiosperms

The common angiosperms in life are Populus euphratica, Maple Poplar and Populus tomentosa. The plants used for decoration at home are Michelia mollissima, Liriodendron mandshurica, Phyllostachys pubescens, Peony, etc., as ornamental plants are also jasmine, sweet-scented osmanthus, oleander, gardenia and so on. Plants with great medicinal value are Hawthorn, heather, loquat and so on.