All classifications of animals. What are the major categories of animal classification?

What are the major categories of animal classification?

There are two main categories of animal classification, which are vertebrates and invertebrates.

Vertebrates include fish and reptiles.

Amphibians, birds, and mammals.

Whereas invertebrates include echinoderms, arthropods.

Coelenterate. mollusks and nematozoa, etc.

Due to the wide variety of animals, there is still a lack of in-depth research and understanding of many animals. Therefore, until now, there is no perfect classification system for the classification of animals in the world. The reason for this difference is that there is a great deal of variation among the different species.

However, some scholars have promoted a number of different classes to phylum, such as: rotifers, abdominal hair, mustello, nematodes and other animals in protoprosthetic coelage animals.

The classification is still based on the differentiation of cells, the formation of the germ layer, the presence or absence of body cavities, the symmetrical form, the division of body segments, the nature of the bones, the characteristics of the appendages, and the occurrence and development of other organ systems. But at present, in general, according to whether the animal has a spine in the body, it is divided into two categories: vertebrates and invertebrates.

Animals are divided into two main groups: vertebrates and invertebrates. Vertebrates include: fish, amphibians, reptiles, birds, mammals; Invertebrates include: coelenterates, flattened animals, nematozoans, annelids, molluscs, arthropods.

The classification of animals is generally divided into two major groups: invertebrates and vertebrates, which can be divided into several subcategories. Invertebrates are often divided into coelenterates, flattened animals, nematozoa, annelids, molluscs, arthropods, fish, amphibians, reptiles, birds, and mammals in the primary stage.

Scientists have identified more than 46,900 species of vertebrates. Including sharks, rays and other cartilaginous fish animals, carp, yellow croaker, grass carp and other bony fish animals, frogs, baby fish and other amphibians, snakes, lizards and other reptiles, chickens, pigeons, sparrows and other birds, monkeys, red pandas and other mammals.

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. Sponges, earthworms, squid, oysters, red starfish, jellyfish, spiders, polyps, radiolaria, roundworms, pork tapeworms, sand silkworms, snails, slugs, etc., are all invertebrates.

Invertebrate characteristics

1. Species system: Invertebrates are a diverse species system, except for the absence of vertebrae, they have almost no other common characteristics, but there is a little bit of mutual kinship. Various invertebrates have their own different morphologies and lifestyles.

2. Life cycle: There are differences in the life cycle of different species of invertebrates. Most invertebrates are oviparous, and some need to undergo multiple larval morphologies, such as butterflies, moths and other insects; Some are adults as soon as they hatch.

1. Reptiles: evolved from the ancient amphibians at the end of the Carboniferous period, the heart has two atria and two ventricles, the ventricles have incomplete diaphragms, and the body temperature is not constant, which is truly adapted to terrestrial life of ectothermic vertebrates, and thus produces constant temperature birds and mammals. Reptiles are not only further adapted to terrestrial life in terms of adult structure, but also free from the constraints of water, and are called amniotes together with birds and mammals.

2. Birds: Birds feed on plant seeds, insects, voles or snakes, most of which are beneficial to humans. We need to protect the birds. Among them, there are migratory birds that are good at long-distance seasonal migration, and there are also resident birds that settle in small areas, which is a large group of animals in the animal kingdom.

3. Mammals: Most mammals are vertebrates with a whole body coat, fast movement, constant temperature viviparity, and diaphragm in the body, and are the most complex animal groups in the vertebrate body structure and functional behavior.

Mammals can be divided into protozoan subclasses, euzozon subclasses, and posterior zonal subclasses. Mammals are found all over the world and live a variety of lifestyles on land, underground, in the water and in the air. There are three types of nutrition: herbivorous, carnivorous, and omnivorous.

4. Insects: insects have a wide variety of different forms, belong to the arthropods of invertebrates, and are the most numerous animal groups on the earth, accounting for more than 50% of all biological species (including bacteria, fungi, and viruses), and their traces are almost everywhere in the world.

The distribution of insects is so wide that no other class of animals can compare with it, and it is almost all over the earth. There are different types. Most insects can be used as specimens, and they are a good biological resource that humans can use.

5. Poultry animals: Poultry refers to artificially raised birds and animals, mainly for the purpose of obtaining their meat, eggs and feathers, and also for other purposes. Generally pheasants and ducks, such as chickens, ducks, geese, etc., but also birds of other families such as turkeys, pigeons, quails and various songbirds.

In addition to providing human meat and eggs, poultry also have an important economic value for their feathers and droppings.

6. Fish animals: Fish are the oldest vertebrates. Some offspring of crosses with different chromosome numbers are still fertile.

They inhabit almost every aquatic environment on Earth, from freshwater lakes and rivers to saltwater seas and oceans. Fishes are divided into two general classes: jawless and jawed.

7. Carnivores: A class of animals that mainly eat meat. Commonly known as predator or carnivore.

The teeth are sharp and powerful, with carnivorous teeth (cleft teeth), i.e., the last premolar of the upper jaw and the first molar of the lower jaw. The two large cusps of the upper fissure and the two large cusps on the outside of the lower fissure act like a guillotine when biting, which can cut the ligaments and cartilage. The large teeth are unusually thick, long and pointed, quite sharp, and play a puncture role.

The categories are as follows:

1. Mammals.

Tigers, wolves, rats, deer, martens, monkeys, tapirs, sloths, zebras, dogs, foxes.

2. Fish. Arowana, pond snakehead, catfish, shark, octopus, spiny fish, herring, salamander, loach, trout, koi.

3. Birds. Eagles, herons, geese, penguins, hornbills, relict gulls, falcons, storks, grouse, boobies, parrots, mandarin ducks, woodpeckers.

4. Amphibians.

Sea lions, turtles, lizards, turtles, toads, giant salamanders.

5. Insects. Butterflies, dragonflies, scorpions, flukes, corals, ciliates, tapeworms.

Chordate.

Chordates.

There are feathers and no feathers.

There are no feet. Birds have scales.

No scales with wings.

Wingless 1Flying protozoa.

Worm 2Doesn't fly with fins.

Finless has mammary glands.

Mammary insects are free.

Mollusca. Fish reptiles.

Mammals: amphibians.

Crustacean. 1.Cartilage.

1.There are feet. 1.Viviparous.

1.There is a tail. 2.Hard bones.

2.No feet. 2.Non-viviparous.

2.Tailless. phylum protozoa, such as clogs, amoeba;

2.sponges, such as hairy pots, bath sponges;

3.Coelenterates phylum such as jellyfish, corals;

4.Platyzoa phylum, such as planarians, schistosomiasis;

5.Nymatodes, such as roundworms and other parasitic nematodes that live in plants and animals;

6.Annelids, such as earthworms, sand silkworms, leeches;

7.phylum molluscs, such as snails, squid;

8.phylum Arthropods, such as shrimp, crabs, insects;

9.Echinoderms, such as sea cucumbers, starfish;

10.Vertebrate phylum such as fish, frogs, turtles, snakes, birds, beasts.

Your classification method itself is very problematic, and they are not on the same level, just like detailing the ...... of men, bad people, happy people, and ugly peopleAll the same, each other is included.

Reptiles, mammals, fish, amphibians, and insects are the natural taxonomic definitions, which are reptiles, mammals, ichthyes, amphibians, and insects.

Birds and poultry are not in the same taxonomy either. Birds are broadly classified into wading birds, migratory birds, land and land birds, climbing birds, songbirds, and birds of prey. Among the poultry, chickens belong to land birds, and ducks belong to migratory birds.

Poultry is only a classification method relative to wild birds, and flying birds are a classification method relative to ground birds.

Carnivores are divided according to their eating habits, and animals are divided into carnivores, herbivores (herbivores) and omnivores.

If there's anything you don't understand, you can send me a message.

Reptiles, birds, mammals, insects, poultry, fish, carnivores.

What are the major categories of animal classification?

crawling lizards; The birds are eagles; There are lions in the suckling; Insects have spiders; poultry has cattle; Fish have sharks; Carnivores have tigers.