Invertebrate animals

Content

• Classification
• Functions and Importance
• Examples of invertebrate animals

The Invertebrate animalsThey are those animals that do not have a vertebral column, so they do not have an articulated internal skeleton. Ex. ants, spiders, bees, flies.

An essential characteristic of invertebrates is that throughout their life undergo a metamorphosis since they change shape, until in adult life they acquire a definite shape: in this way, the offspring of the adults can become very different.

• See also:What are vertebrate animals?

Invertebrates they make up no less than 95% of all the species existing on the planet, being a quantity much superior to the animals that have vertebrae and an internal skeleton: there are almost a million species of invertebrate animals known in the world.

Some invertebrates arethey attract with singing to facilitate playback. A characteristic that can be generalized a little more is their ability to move, which is not verified anyway in some class of invertebrates that have certain similarities with plants or amorphous objects.

Invertebrates do not have a specific habitat for some live in the air, others on land, and others in water.

• See also: What are viviparous animals?
  

Classification

The number and different types of invertebrates may be difficult to imagine, but they constitute a large group that is roughly divided between those with bodily protection and those without.

Within the first group appear the arthropods (with jointed legs and a divided body, of which most insects, arachnids and crustaceans are part), the mollusks and the echinoderms; while in the group of those who do not have protection appear worms (with a soft and elongated body), the coelenterates and the poriferous (the group of invertebrates with the greatest plant appearance, which lives in the sea subject to rocks or other objects).

Functions and Importance

Many of the species that make up the category of invertebrates have some function that is very useful for humans: the pollination, which are carried out by some of them, helps the flowers to become fruits and seeds that will later feed people and other animals.

Some invertebrates are a vital source of food for other animals, or they work in the pest control process.

Finally, some invertebrates act as decomposers and cleaners, since they eat fungi, bacteria or decomposing matter, turning it into compost to nourish the soil.

• See also: What are oviparous animals?

Examples of invertebrate animals

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• Vertebrate animals