How many species of plants are there and how many species of plants are there?

It is classified by the morphology of the stem of the plant.

1.Arbor. A woody plant with an erect trunk that is more than 5 meters tall is called an arbor.

Corresponding to the low shrubs, the tall trees that are usually seen are trees, such as kapok, pine, magnolia, birch, etc. Arbors are divided into deciduous trees and evergreen trees according to whether they are deciduous or not.

2.Shrub. Woody plants with inconspicuous trunks and often multiple branches at the base are called shrubs, such as roses, dragon boat flowers, Yingshan red, peonies, etc.

3.Subshrubs.

It is a dwarf shrub, perennial, the upper part of the stem is grassy, and it withers after flowering, while the base stem is woody, such as periwinkle, cassia, etc.

4.Herbaceous plant.

The stems of herbaceous plants contain few xylin cells, and the whole plant or aboveground parts are easy to wilt or die, such as chrysanthemums, lilies, impatiens, etc. It is divided into annual, biennial, and perennial herbs.

5.Liana.

Plants that have long stems that do not stand upright, and that climb upwards by clinging to other objects are called lianas. According to the nature of the stem, lianas are divided into two categories: woody vines and herbaceous vines, and the common wisteria is woody vines.

Lianas are divided into climbing vines according to whether they have special climbing organs, such as melons, peas, and lilies, which have tendrils or adventitious aerial roots, and can wrap around other things to grow; Winding vines, such as morning glory, honeysuckle, etc., have stems that can grow around other things.

Plants are classified according to their ecological habits.

1.Terrestrial plants.

Plants that grow on land.

2.Hydrophyte.

Refers to plants whose plant bodies are wholly or partially submerged in water, such as lotuses, water lilies, etc.

3.Epiphytes.

Plants that are epiphytic to other things, but can live on their own without the need to absorb nutrients from their supporters, such as most tropical orchids.

4.Parasitic plants.

Plants that parasitize on other plants and absorb some or all of the nutrients for their own life by invading the tissues of the host with sucking roots, such as mulberry parasitism, dodder seeds, etc.

5.Saprophytes.

Plants that live on saprophylaxis and do not have chloroplasts, such as fungi, crystal orchids, etc.

Plants are classified according to their life cycles.

1.Annual plants.

The life cycle of plants is short, from a few weeks to several months, and they complete their life process within a year, and then the whole plant dies, such as cabbage, beans, etc.

2.Biennial.

Plants germinate and grow in the first year, and die, such as sugar beets, after flowering and fruiting in the second year.

3.Perennial plants.

The life cycle grows year after year and many years ago, such as common trees and shrubs are perennial plants. There are also perennial herbaceous plants that can live for many years, or where the aerial parts wither in winter and continue to grow and blossom the following year.

There are about 500,000 species of plants in the world. All plants evolve and evolve according to the laws from low to high, from simple to complex, from aquatic to terrestrial.

Lower Plants 1) Algae plants such as cyanobacteria and green algae.

2) Fungi Representative plants: Rhopus creepingus, Penicillium, yeast, mushrooms, fungus.

3) Lichens are symbionts of algae and fungi.

Higher Plants 1) Bryophytes Representative plants: Liverwort, small blonde moss.

2) Fern Representative plants: South China hairy fern, centipede grass, miscanthus and Manjianghong.

3) Gymnosperms Representative plants: Masson pine, fir, cypress, cycad, araucaria.

4) Angiosperms Angiosperms are the most advanced group in the plant kingdom, and compared with gymnosperms, they mainly have the following evolutionary characteristics:

With a true flower, the ovule is coated in the ovary, the ovary forms the fruit, and the seed is coated with a pericarp, which is more conducive to the protection and propagation of the offspring. Double fertilization is a phenomenon peculiar to angiosperms.

There is no number of clear.

This question is tantamount to asking in vain.

There are 450,000 species of plants in the world, of which there are more than 200,000 species of higher plants alone, and there are more than 30,000 species of higher plants in China. There are so many types that for those who are not familiar with it, it is simply disorganized. However, when we understand the classification of plants, we will find that they actually belong to each other and are well organized.

Every plant, whether it is higher or lower, seed or spore, can be found somewhere by saying its scientific name.

Through their efforts, plant taxonomists have largely figured out the relationships between various plants and arranged them in a system according to their proximity to each other, from low to high, from simple to complex. In this system, each plant has its own place, just as everyone has a hukou. The system consists of several levels, the highest being the "boundary", followed by the "phylum", "class", "order", "family", "genus", and the most basic is the "species".

It consists of one or several species, constituting genera, consisting of one or several genera, constituting families, and so on, and finally forming a boundary by several phyla, that is, the plant kingdom.

In the classification hierarchy, the "branch" is an intermediate unit of classification. In the process of identifying plants, if the taxonomic level of "family" can be grasped, it will have the role of outline. As long as you can grasp the characteristics of 15 or 20 common families, you can identify plants.

Of all gymnosperms, it can be divided into 12 families; All angiosperms can be divided into more than 300 families. Under each family, there are 1 to hundreds of thousands of plant species, and some even contain tens of thousands of plant species. For example, there is only one species in the Ginkgo family, more than 3,300 species in the Rosaceae family, and more than 17,000 species in the butterfly family.

Regardless of the number of species in the family, the kinship between these species is relatively close. Therefore, they have a lot in common in terms of morphology, especially in the structure of flowers. As mentioned in the inflorescence, the Asteraceae family has a capitate inflorescence, and the Apiaceae family has an umbel inflorescence.

In addition, there are woody rhinoceraceae, the leaves are almost opposite, the Lamiaceae family has a lip-shaped corolla, and the stems are almost square; The flowers of the Shi'an family are all herbs, and the corolla is in the shape of Shi'an. Rubaceae plants all have aromatic oil glands on their leaves......

Therefore, once you come across a plant that you don't recognize, just judge the family it may belong to. It will not be too difficult to find the relevant professional books on plant classification. Because in almost all classified books, the arrangement of plants is based on families, and the plants of each family are grouped together.

In this world, the creatures that are most closely related to human beings are plants. So far, about 500,000 species of plants have been discovered worldwide, of which about 350,000 have been named by scientists.

Nearly 500,000 species of plants are known to be on the planet.

Among them, there are almost 300,000 species of green flowering plants alone. According to the morphology, structure and living habits of plants, the plant kingdom can be divided into 7 main groups, namely: algae, fungi, lichens, bryophytes, ferns, gymnosperms and angiosperms.

Among them, algae, fungi and lichens belong to the lower plants; Mosses, ferns, gymnosperms and angiosperms are higher plants. Algae, fungi, lichens, mosses, ferns and other plants use spores to reproduce, so they are called spore plants, they do not bloom and do not bear fruit, so they are also called cryptophytes. Gymnosperms and angiosperms can flower and bear fruit and reproduce with seeds, so they are called seed plants or flowering plants.

How many species of local plants are there in Chengde.

Plant classification according to ecological habits: positive plants (light-loving plants): Masson pine, Pinus tabuliformis, Scots pine, black pine, larch, golden pine, water pine, metasequoia, lupus fir, pond cedar, araucaria, torch pine, poplar, black locust, birch, ginkgo, chestnut, neem, oak, cork oak, quercus microphylla, quercus quercus, sumac, coptis wood, torch tree, paulownia, willow, catalpa, soapberry, salinus, catalpa, ash, crape myrtle, hibiscus, acacia, lingxiao, walnut, blackberry, plane tree, almond, acacia, Eucalyptus, wisteria, wolfberry, apricot tree, plum, peach tree, begonia, golden bellflower, forsythia, yellow thorn rose, etc.

Negative plants (shade-loving plants, shade-tolerant plants): yew, podocarpus, cinnamon, fir, spruce, hemlock, bamboo cypress, coarse quint, southern yew, Fujian cypress, camellia, purple nannan, big-leaved nannan, bitter oak, sweet oak, cottonberry, quercus chinensis, quercus glauca, citric bone, coral tree, big-leaved boxwood, sea tung, mosquito mother tree, osmanthus, handing wood, peach leaf coral, cinnabar root, pachyderma, alder heather, southern bamboo, palm, yucca, honeysuckle, horse drunken wood, luoshi, elderberry, ground brocade, rhododendron, gardenia, Tianmu qionghua, Octagonal gold plate, hosta, ten merits, ivy, June snow, etc. Neutral plants (light-loving, shade-tolerant):

Fir wood, cedar, juniper, cypress, juniper, juniper, Huashan pine, Japanese five-needle pine, incense tree, elm, oak tree, zelkova, horse chestnut, citrus aurantium, pentagonal maple, Acer truncatum, maple poplar, camphor, bamboo, rhododendron, allium orchid, purple fescue, evergreen, horseshoe gold, etc. Drought-tolerant plants: Masson pine, Pinus tabuliformis, Black pine, red cypress, cedar, juniper, whitebark pine, pencil cypress, juniper, larch, sandalwood, almond, elm, arborvitae, Huaxiang, tangtang pear, mountain pepper, willow, oak, cork oak, maple, Coptis chinensis, stepwood, heather, firethorn, acacia, acacia, neem, black tree, plum, salinium, coriander, Junqianzi, locust tree, white elm, oak tree.

Plants that now live on the earth.

It is estimated that there are more than 500,000 species (about 250,000 seed plant species). The first step in the study of such a large number of plants and their wide variety of plants is to classify them according to their natural nature, from coarse to fine, from the surface to the inside, otherwise there is no way to start.

There are still many controversies about the classification of the plant kingdom, for example, ferns and gymnosperms are sometimes divided into several phyla. A rough classification is used here, dividing plants into only four main phyla: gymnosperms, angiosperms, bryophytes, and ferns.

There are about 300,000 species in the world, and there are still some that have not yet been discovered.

There are many kinds.

It is divided into nine gates, namely:

1.Angiosperm.

226,000 species.

Divided into two more outlines).

172,000 species of dicots.

54,000 species of monocots.

2.There are 800 species of gymnosperms.

3.12,000 species of ferns.

4.26,000 species of moss.

5.33,000 species of algae.

6.50,000 species of fungi.

7.20,000 species of lichens.

8.There are 1,600 species of bacteria.

9.There are 2,000 species of cyanobacteria plants.

There are about 370,000 species of plants in the world;

1.Angiosperms 226,000 species (divided into two outlines) and 172,000 species of dicots.

There are 54,000 species of monocotyledonous plants.

2.There are 800 species of plum plants.

3.12,000 species of ferns.

4.26,000 species of moss.

5.33,000 species of algae.

6.50,000 species of fungi.

7.20,000 species of lichens.

8.There are 1,600 species of bacteria.

9.There are 2,000 species of cyanobacteria plants.

There are about 500,000 species of plants in the world, and all plants evolve and evolve according to the laws from low to high, from simple to complex, from aquatic to terrestrial.

Plants are one of the main forms of life, including trees, shrubs, rattans, grasses, ferns, and green algae, lichens and other familiar organisms, seed plants, bryophytes, ferns and ferns and other plants, it is estimated that there are about 350,000 species, most of the energy of green rent and color digging plants is obtained from sunlight through photosynthesis, temperature, humidity, light, fresh water are the basic needs of plant survival, seed plants have six major organs roots, stems, leaves, flowers, fruits, seeds, Green plants have the ability to photosynthesize, with the help of light energy and chlorophyll, under the catalytic operation of enzymes, the use of water, inorganic salts and carbon dioxide for photosynthesis, the release of oxygen, the absorption of carbon dioxide, the production of glucose and other organic matter, for the use of plant slag.