The two main groups of animals are vertebrates and invertebrates.
What is the largest group of animals?
The phylum Arthropoda is the largest phylum or group of animals in the Kingdom Animalia.
What are the 2 main groups of the animal kingdom?
Taking the animal kingdom as an example, we can see that it is split into two clear groups: Invertebrates – animals without a backbone. Vertebrates – animals with a backbone. The animals have been divided into two groups based on the presence or absence of a backbone.
What are the 2 types of animals?
Animals can be broadly divided into two groups: invertebrates and vertebrates. Invertebrates are animals that do not have a backbone.
What animal has 3 hearts?
The giant Pacific octopus has three hearts, nine brains and blue blood, making reality stranger than fiction. A central brain controls the nervous system. In addition, there is a small brain in each of their eight arms — a cluster of nerve cells that biologists say controls movement.
What’s the biggest land animal in the world?
The Antarctic blue whale (Balaenoptera musculus ssp. Intermedia) is the biggest animal on the planet, weighing up to 400,000 pounds (approximately 33 elephants) and reaching up to 98 feet in length.
What are the 6 animal groups?
The six basic animal groups include amphibians, birds, fish, invertebrates, mammals, and reptiles. Although there are many other groups of animals, and the way scientists classify and categorize species changes frequently, in this article I’ll keep it simple by focusing on just six basic groups.
What are the 5 main animal groups?
Animals can be divided into five distinct groups: mammals, fish, birds, reptiles, and amphibians.
What are the 7 classifications of animals?
There are seven main taxonomic ranks: kingdom, phylum or division, class, order, family, genus, species.
What is the classification of animal?
Animals are then broken down into two types: vertebrates and invertebrates. Animals with a backbone are vertebrates. Vertebrates belong to the phylum called Phylum Chordata. Vertebrates are further broken down into five classes: amphibians, birds, fish, mammals, and reptiles.
How many classes of animals are there?
There are six animal classes and every animal in the animal kingdom belongs to one of them. We can also group similar types of animals into orders, families, genera, and species.
How can you classify animals?
In accordance with the Linnaeus method, scientists classify the animals, as they do the plants, on the basis of shared physical characteristics. They place them in a hierarchy of groupings, beginning with the kingdom animalia and proceeding through phyla, classes, orders, families, genera and species.
What animal has 32 brains?
The leeches that I have driven several hundred miles to encounter are freshwater, bloodsucking, multi-segmented annelid worms with 10 stomachs, 32 brains, nine pairs of testicles, and several hundred teeth that leave a distinctive bite mark.
What animal has 800 stomachs?
What animal has no blood?
Flatworms, nematodes, and cnidarians (jellyfish, sea anemones, and corals) do not have a circulatory system and thus do not have blood. No, penguins do not have blue blood. The droppings of the healthy animal will be firm.