What do you know about animals?

There are more than a million species of animals have been discovered, and there is more to mil1ions time it is discovered. Animals living breathing organisms found in almost all habitats on Earth, including the depths of the oceans, the freezing of Arctic, and even within other plants and animals.

The realms are live animals were divided into animals without backbones (invertebrates), such as lobsters and snails and animals with backbones (vertebrates), such as frogs and monkeys. Invertebrates are the most in the animal kingdom.

Want to know what an animal is?

Animals are a composition of cells. Most of these cells move around, and those that are fixed in place, or sedentary, moving parts of your body. Animals survive by taking food into their bodies. Have sensors, and nervous system that allow them to realize what is going on and respond correctly.

Classification of animals

The animals were divided into groups based on their similar characteristics and if they have common ancestors. In this There are currently 35 major groups called phyla (singular phylum). Each phylum is shared across sub-groups. The youngest of them is the species, which contains animals consisting of only one type.

As flatworms

Worms like this phylum Platyhelminthes () have fallen body with a single opening, the bottom, which is where the mouth. Now more than eighteen thousand plant species, among which, like tapeworms, which are parasites of humans and other animals in the kingdom.

Nematodes

These are the roundworms, or just nematodes (Phylum Nematoda) are a thin, cylindrical body which indicates the end of both sides. You will find the nematodes in many regions and live in large numbers in the soil. The nematodes are parasites of some animals and plants.

What are sponges?

Animals received the most basic are the sponges (Phylum Porifera). There are about 5,000 species, most of whom live in the sea attached to rocks and other things. Water is taken through holes or pores, which are found in the body wall of the sponge, food, and then filtered out and eaten by the cells of the sponge.

What are cnidarians?

Today there are nine thousand species of cnidarians (phylum Cnidaria), most of them live in the sea. Accepted anemones hydra and jellyfish. Cnidarians catch food for their bodies with their armed tentacles have stinging thread called nematocysts.

Animal skeletons

The skeletons in the works of the animals as a model of support that maintains the shape of an animal allows the animal to move. Most skeletons found in animals are structures hard, either within or outside the body of the animal to which the muscles are attached. and animal body, to which skeletal muscles are usually attached Internet protects animal organs and in the case of an insect's external skeleton, which leaves the animal in danger of extinction.

A skeleton found inside the body is called an endoskeleton. hard exoskeleton that covers all or part of the body is called an exoskeleton. Hydrostatic is an internal skeleton is found in soft-bodied animals, such as earthworms and class.

About the Author

Uchenna Ani-Okoye is an internet marketing advisor and co founder of Free Affiliate Programs

For more information and resource links on animals visit: Animal Research

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