Did plants or animals come before on Earth?

Plants Without plants, there is no food.

I said vegetative.

Hehe. Slime molds (slime molds) are not wrong. The life of slime molds is divided into two periods, in one period like amoebae, which have no cell wall and can move; In another period, it's like a fungus.

In addition to slime molds, there are also euglena, which have eyespots, can sense light, flagella, can move, but also have chloroplasts in the body.

Plants and animals, including fungi, are not evolutionarily related to each other, and they all evolved from protists. Protists, in turn, evolved from prokaryotes.

Therefore, some protists have both animal and plant characteristics. Euglena, for example, are both free and chloroplasty.

Existing viruses and then bacteria.

In terms of flora and fauna, it should be an existing marine plant.

It was the plants that came first. But I don't know much about the following questions.

The order of appearance of living things on the earth is from low to high, from simple to complex, from imperfect to perfect.

Bacteria are the lowest, followed by plants, and animals are the highest, and these three categories of organisms also follow this law.

Among plants, fruits belong to the phylum Angiosperms and are already the higher forms of plants. Before angiosperms, there were gymnosperms, ferns, and even early cyanobacteria, among others.

Due to the lack of direct evidence such as fossils, it is generally believed that angiosperms appeared between the Late Jurassic and Cretaceous periods in the Mesozoic Era, and the "biological explosion" began in the Cambrian of the Paleozoic Era, and amphibians began to evolve into reptiles in the Carboniferous period of the Paleozoic Era.

In terms of time, angiosperms appeared about 100 million years ago, while reptiles appeared in ancient times.

billions of years.

So, the conclusion is: although plants appeared earlier than animals, the ancestors of the fruit plants that you are talking about belonging to the phylum Angiosperms, appeared later than land animals. In other words, angiosperm plants evolved gradually through natural selection after the emergence of animals

Plants can have enough oxygen for animals to breathe.

First there were plants, then there were animals. According to Darwin's principle of biological evolution, living things develop from the lower to the higher.

Plants are one of the main forms of life and include familiar organisms such as trees, shrubs, vines, grasses, ferns and green algae. Plants such as seed plants, bryophytes, ferns and ferns are estimated to have about 350,000 species in existence. Until 2004, 287655 species had been identified, with 258,650 species of flowering plants and 15,000 species of bryophytes.

Most of the energy for green plants is obtained from sunlight through photosynthesis.

Taxonomists classify animals according to their various characteristics (morphological, cellular, genetic, physiological, ecological, and geographical), and divide animals into 7 main classes, namely kingdoms, phyla, classes, orders, families, genera, and species.

According to fossil research, the first animals to appear on Earth originated from the ocean. After a long geological period, early marine animals gradually evolved into various branches, enriching the early life forms on earth. Prehistoric animals appeared before the advent of humans and flourished during their respective periods of activity.

Later, they became extinct one after another in a constantly changing environment. However, the animals on Earth continue to evolve and reproduce from the lower to the higher, from the simple to the complex. And with the diversity we have today.

Scientists divide the extant animals known to humans into two categories: invertebrates and vertebrates.

Scientists have identified more than 46,900 species of vertebrates. These include fish and animals such as carp and yellow croaker, reptiles such as snakes and lizards, amphibians such as frogs and baby fish, and mammals such as birds and red pandas.

Scientists have also discovered more than 1.3 million species of invertebrates. Most of these animals are insects, and most of the insects are beetles. Animals such as slugs, earthworms, squid, oysters, red starfish, jellyfish, spiders, polyps, radiolaria, roundworms, pork tapeworms, caterpillars, sand silkworms, snail slugs, etc., are among the invertebrates.

The bodies of all members of the animal kingdom are heterotrophic organisms made up of cells.

From the elements to the plants, the Archean is the oldest period in the history of geological development, lasting for 1.5 billion years, and is the earliest stage in the history of the earth's evolution with a clear geological record. Due to its age, the preserved geological record of the Archean is very fragmented and fragmented. However, Archean is also a critical period in the evolution of the earth, and the formation of the earth's lithosphere, hydrosphere, atmosphere and life all occurred in this important and long period, about 3.9 billion years ago, the earth formed the first permanent crust, and the atmosphere and seawater began to form 3.5 billion years ago.

In the early days of the Archean era, there was no life on Earth. Life elements, such as C, H, O, N, etc., first form simple organic molecules under the bombardment of strong cosmic rays and lightning, and then develop into complex organic molecules, and then form quasi-life condensations, and then evolve from condensations to primitive life. About 3.3 billion years ago, the oldest sedimentary rocks on Earth were formed, the atmosphere already contains a certain amount of carbon dioxide, and the earliest stromatolites associated with biological activities appeared. By 3.1 billion years ago, relatively primitive algae and bacteria began to appear on the earth.

2.9 billion years ago, a large number of blue-green algae appeared on Earth to form stromatolites, indicating that free oxygen and photosynthetic prokaryotes appeared on Earth during this period. The origin of life.

The question of the origin of life has long been interpreted in various ways. In recent decades, people have made great progress in conducting comprehensive research on the origin of life in light of the new achievements of modern natural science.

It is generally believed that the first animals appeared between 100 million and 500 million years ago. The phylum Sponges appeared relatively early and are very different from other species. Sponges have different kinds of cells, but cells do not differentiate into tissues with different functions.

Through continuous evolution, animals have also gone through the process from unicellular to multicellular, from aquatic to terrestrial, from simple to complex.

2.5 billion years ago (Proterozoic), the earliest plants in the history of the earth belonged to fungi and algae, and then algae flourished for a time. It wasn't until 438 million years ago (Silurian period) that green algae broke free from the constraints of the water environment and landed on the earth for the first time, evolving into ferns, adding green to the earth for the first time. 360 million years ago (Carboniferous), ferns became extinct, replaced by lycopodiums, cuneiformes, euferns and seed ferns, forming swampy forests.

The main plants of the Paleozoic era were almost completely extinct 248 million years ago (Triassic), and gymnosperms began to emerge, evolved pollen tubes, and completely broke away from their dependence on water, forming dense forests. 145 million years ago (Cretaceous) angiosperms (flowering plants) began to appear, and developed rapidly in the late period, replacing gymnosperms, forming the angiosperm era that continues to this day. Modern types of pine, cypress, and even metasequoias, redwoods, etc., were created during this period.

Supplement: Plants and animals in the present sense belong to the kingdom Plants and Animals respectively, and they are both eukaryotes, while unicellular algae and protozoa both belong to the kingdom of protists and have the same taxonomic status as plants and animals, and no longer belong to plants and animals. It is generally believed that the current plants originated from green algae, at least with green algae or protogreen algae.

It should have been plants first, after all, animals are more difficult to evolve. It was supposed to be a single-celled plant that appeared first, and slowly evolved into various species later.

God created plants, then animals, and finally Adam and Eve!

Which comes first, man or woman?

Microbe. Fungi, bacteria, mycoplasma, chlamydia, rickettsia, spirochetes, actinomycetes, viruses, and many more.

Microorganisms include: bacteria, viruses, fungi and some small protists, microscopic algae, etc., a large group of organisms, which are small and closely related to humans. It covers many kinds of beneficial and harmful, and is widely involved in food, medicine, industry and agriculture, environmental protection, sports and many other fields.

In textbooks in Chinese mainland and Taiwan, microorganisms are divided into the following 8 categories: bacteria, viruses, fungi, actinomycetes, rickettsia, mycoplasma, chlamydia, and spirochetes. Some microorganisms are visible to the naked eye, such as mushrooms, reishi, shiitake mushrooms, etc., which belong to fungi.

There are also microorganisms that are a class of "non-cellular organisms" composed of a few components such as nucleic acids and proteins, but their survival must depend on living cells.

Refers to microorganisms such as fungi, viruses, and bacteria.

It cannot be counted as an ecosystem (1) The ecosystem includes the biological component.

The abiotic part, the abiotic part is mainly sunlight, air, water, suitable temperature, a certain living space, etc., this aquarium lacks sunlight and cannot be counted as an ecosystem. (2) The biological part includes "producers", "consumers" and "decomposers", plants are "producers", animals and other small organisms are "consumers", and because of the lack of fungi, bacteria and other "decomposers", they cannot be regarded as an ecosystem.

Organisms are composed of prokaryotes, eukaryotes, and non-cellular organisms, including animals, plants, bacteria, fungi, viruses, etc., and are characterized by their ability to metabolize.

Organisms are divided into plants, animals, and microorganisms (including: fungi, bacteria, mycoplasma, chlamydia, rickettsia, spirochetes, actinomycetes, viruses, etc.).