What are the big organisms on Earth? What kind of creatures are there on Earth?

Giant veined dragonfly. Mulberry pseudodont.

Giant rhinoceros. Aeolus pterosaur.

There are many creatures on the earth, and everyone is the most familiar with them, and you can see them at a glanceIt is none other than animals and plants。In addition to these two categories, there are also creatures that are invisible to the naked eye, such as:Bacteria, fungiWait a minute.

These are all broad categories, and each category can be divided into many sub-categories. For example:Animals can be divided into higher animals and lower animals；It can also be divided into those that fly in the sky, those who walk on the ground, and those who swim in the water, and in addition to this animal with a clear living area, there are also some amphibians.

They can live not only in the water, but also on land, such as crocodiles, frogs, etc.

In addition to these classifications,Animals can also be dividedMammalsand non-mammals。Humans are mammals, and the offspring of reproduction are born directly in human form and grow up from breast milk. In addition to humans, apes.

Cats, dogs, and many more are all mammals. Birds and turtles are non-mammals, and their reproduction needs to hatch and hatch the baby out of the egg, so that the baby can be considered born in the world.

The types of plants are also diverseIn terms of height, plants include trees, shrubs, and shrubsvinesPlants, grasses, turfAnd so on, and there are many different kinds of plants at each height of the space. Plants are also classified as edible and inedible. We usually eat vegetables and rice.

Wheat, wild vegetables.

It is an edible plant, and humans can not only fill their stomachs but also produce adverse reactions when they eat it.

There are also some plants that humans eat that cause diarrhea or are poisoned to death, which are inedible plants.

In addition to flora and fauna,There is also a large group of organisms called fungi。Many of these creatures can also be seen and touched, such as various mushrooms. Mushrooms are fungi, but some can be eaten and some can't.

It is well known that poisonous mushrooms are ingested by mistake.

It can be hallucinating, it can be fatal, and the more beautiful the mushroom, the more poisonous it is.

In addition,There are also a lot of bacteria on EarthThere are also quite a few types of bacteria. From a human health perspective, bacteria can be both good and bad. However, no matter what kind of creatures they are, since they can exist on the earth, it means that the earth has the conditions for the survival of these creatures.

There are mammals, birds, fish, amphibians, reptiles, etc. on Earth.

Organisms on earth include animals, plants, bacteria, fungi, archaea, and man are also a kind of animal.

There are plants, bacteria, fungi, animals, humans, some archaea, etc., and there are many kinds of organisms, and there can be a variety of them.

Question 1: Types of organismsHow many species of organisms are there in the world According to some reports, there are 8.7 million species of organisms on Earth, including 6.5 million species of terrestrial organisms and 2.2 million species of marine organisms. But in fact, there are many creatures that live underground that are not well known, and there are many creatures in the forest that are not well known.

Question 2: How many species of organisms are known on the earth According to zoologists, there are about 1.5 million species of animals known on the earth. Animals can be divided into two categories: vertebrates and invertebrates, vertebrates have a vertebral column composed of many vertebrae on the back of their bodies, and they are generally larger.

The body of invertebrates does not have a vertebral column, and most of the individuals are small, but there are many species, accounting for more than 90% of the entire animal species. Insects such as flies, mosquitoes, grasshoppers, butterflies, etc., are all invertebrates. Vertebrates can be divided into five major groups: fish, amphibians, reptiles, birds and mammals.

Fish are the largest group of vertebrates, with a total of 25,000 to 30,000 species including marine fish and freshwater fish, such as carp and yellow croaker. There are more than 2,000 species of amphibians, such as frogs. There are more than 3,000 species of reptiles, such as snakes, turtles, crocodiles, etc.

There are 9,000 species of birds, such as pigeons, sparrows. There are more than 4,500 species of mammals, such as horses, cows, lions, tigers, etc. There are still many species of animals in the world that have not yet been discovered.

No one knows exactly how many species of life there are on Earth.

Question 3: How many species of organisms exist on Earth Scientists once estimated that there are 1.5 million species of organisms in the world. With the deepening of scientific research, this number has risen to 30 million 50 million.

Tropical rainforests are home to more than half of the world's species.

At present, there are about 10 million defined and named organisms on Earth, yet many scholars estimate that there are still 10 million species in the world that have not been defined, named, or even discovered. The main reasons why these organisms have not been discovered are that their life cycles do not intersect with humans, that they only inhabit specific small areas, that they do not have much research value for humans, or that the organisms themselves are too small to be noticed. Wait a minute.

So far, more than 1.7 million species have been identified by humans. Among them mammals.

There are 4,200 species, 8,700 species of birds, reptiles.

There are 5,100 species, amphibians.

3,100 species, 21,000 species of fish, and more than 1.3 million species of invertebrates; In terms of plants, there are 250,000 species of higher vascular plants and about 150,000 species of lower plants. In fact, the actual number of species is much higher than the above figures. Because some regions, especially the tropics, are rich in species, people have a very incomplete grasp of them.

Therefore, some studies estimate that the total number of species in the world is roughly between 500 and 10 million. However, in recent years, some scientists have studied the classification of insects in tropical forests, and estimated that there may be more than 30 million species of organisms on the earth.

There are more than 300,000 species of plants and more than 1.5 million species of animals in the world.

Insects belong to the class of insects of the phylum Arthropoda of the animal kingdom, which is the largest group, the largest number and the most widely distributed in the animal kingdom.

It is known that there are more than 1 million species of insects on the earth, accounting for about two-thirds of the entire animal kingdom, while there are more than 24,600 species of fish, nearly 8,000 species of reptiles, more than 9,000 species of birds and more than 5,000 species of mammals in the world. Desperate Fingers.

We all know that the largest creature on land today is the elephant, but what is the largest creature in the ocean, which makes up two-thirds of the area?

The Earth we live on is a beautiful blue planet from space, and it looks more like a "water ball". The Earth is one of the eight planets in the solar system, ranking third in order of distance from near to far, and is 100 million kilometers away from the Sun. The radius of the earth's equator is kilometers, the polar radius is kilometers, the average radius is about 6,371 kilometers, the circumference of the equator is about 40,076 kilometers, the surface area of the earth is 100 million square kilometers, of which 71% is the ocean, 29% is the land, the earth's interior is composed of the core, mantle, and crustal structure, and the earth's exterior has water, atmosphere, and magnetic field, which is the home of hundreds of millions of living beings, including human beings.

After hundreds of millions of years of evolution, the land is large.

The largest terrestrial creature on earth is the elephant, which can be divided into two types: Asian elephant and African elephant, with an average weight of between 4 and 8 tons, but this is not the largest living creature on the earth today. Because the Earth's land area is only one-third of the Earth's, what is the largest organism in the wider ocean?

The largest creatures on Earth are as follows:

1. The largest amphibian on the earth is the giant salamander: the giant salamander is the largest amphibian, with a body length of about 1 meter, the longest up to 2 meters, a weight of 20-25 kilograms, and the largest up to 50 kilograms.

2. The largest reptile is the saltwater crocodile: the saltwater crocodile is the largest reptile in the world, with a body length of up to 7 meters, and they are widely distributed in the islands of southeastern Asia and northern Oceania, and also inhabit northern Australia.

They have a wide range of recipes and will attack everything they can swallow, including humans.

3. The largest mammal is the blue whale: The blue whale is considered to be the largest animal known to have ever survived on Earth, reaching up to 33 meters long and weighing 181 tons.

The blue whale has a slender body and a blue-gray smiling back, although it sometimes looks lighter in the water.

4. The largest animal on land is the elephant: The elephant is the largest living land-dwelling social mammal in the world, usually in a family unit.

The cortex of elephants is very thick, but the folds of the cortex are very thin, so it is often used to prevent mosquito bites by mud baths.

Ivory is important for defending against enemies**.

5. The largest herbaceous plant is the traveler's banana: a plant of the Traveler's banana family, with a trunk like a palm, 5-6 meters high.

The leaves are arranged in 2 rows at the top of the stem, like a large folding fan, and the leaves are oblong, like banana leaves.

It is native to Madagascar, Africa, and has a small amount of cultivation in Guangdong, China, and is a tree species for garden greening.

When people who travel to Madagascar, when they are thirsty, they can use a knife to pierce the base of their petioles to get water, hence the name.