Vertebrates and invertebrates: differences and similarities


The planet earth has a great biological Diversity, which translates into a large number of living beings that populate different ecosystems and have genetic differences, which allows very varied life forms. In order to study and understand animals better, we humans have developed different classification forms, for example based on food, forms of reproduction or structure. The classification of animals according to their structure separate those who have spine from those who do not.

In this Animal Expert article we will explain in detail what vertebrate animals are, what invertebrate animals are and we will offer you a list with examples of vertebrate and invertebrate animals so that you know explain the differences of vertebrate and invertebrate animals for primary school children, for example Do you want to know everything about their differences or know some curiosities? Take note!

What are vertebrate animals?

The Vertebrate animals or "Vertebrata"They are a diverse group of animals that have a backbone or spine, composed of vertebrae. The skeleton of vertebrate animals can be bony or cartilaginous and thanks to its ease of fossilization it has been key to be able to study the evolution of animals on planet earth.

The vertebrae They are highly specialized bones that, together, form the spine. The function of the spine is to protect and support the spinal cord, as well as connect it to the nervous system. Vertebrate animals are characterized by having bilateral symmetry and possessing a skull that protects the brain.

The body of vertebrate animals is divided into three zones: head, trunk and limbsIn addition, some species also have a tail. Another characteristic to highlight of vertebrate animals is sexual differentiation, which in some cases may be more evident than in others. In total, it is estimated that there are more than 62,000 species of vertebrate animals.

Vertebrate animals

The vertebrates they are all those animals that possess spine or spine. Vertebrates began as water animals, but have evolved to be present in numerous habitats. The 5 classes of vertebrates that exist are the following:

Invertebrate animals

On the other hand the invertebrates they are animals that they have neither articulated internal skeleton nor spine. They are very numerous, with 95% of the animal species belonging to this group. Their large number means they have more classes than vertebrates, these classes being the following:

Insects and other invertebrates in danger

In Chile, very few insects have conservation problems. However, there is a species that has been in Vulnerable state since 2006 and is the dragonfly Phyllopetalia excrescens. This is endemic to central Chile, the Metropolitan Regions and Maule. Its conservation status is due to the high degradation of its habitat due to agricultural, mining and construction activities.

There are also other threatened species such as the Mother of the snake (Acanthinodera cummingi) and the Flying Deer (Chiasognathus Grantti). These two species are large, so they are striking and people catch them as ornaments or other purposes (sale). As for the rest of the invertebrates, the list is much longer.

Some of the species that are in danger of extinction are: the crabs Aegla papudo, Aegla laevis laevis and Aegla spectabilis, the shrimp Virilastacus rucapihuelensis, the crab Lithodes antarctica and the crab Paralomis granulosa.

In Vulnerable state they are: the shrimp Cryphiops caementarius, Samastacus spinifrons, Parastacus pugnax, Parastacus nicoleti and the crabs Aegla laevis talcahuano, Aegla bahamondei, Aegla cholchol, Aegla manni, Aegla hueicollensfi and Aegla alacalui. Among the mollusks, the best known case is that of Loco (Concholepas concholepas), which is in danger of extinction, since its exploitation has been very intense in recent years and for this reason constant vedas are applied.

What are invertebrate animals?

The Invertebrate animals or "Invertebrata"they are a group of animals that They are characterized by not having vertebrae, spine or articulated internal skeleton. They are usually small in size and most have an external skeleton that protects them, known as exoskeleton, which can be shown in the form of a shell or shell among others.

As a curiosity we must add that invertebrate animals they represent 95% of all species of animals of planet earth and that, unlike vertebrate animals, do not have the ability to colonize or adapt.

Examples of invertebrate animals

What else can we add from invertebrate animals? We can highlight that they exist 6 main groups: arthropods, molluscs, worms (flatworms, nematodes and annelids), echinoderms (sea urchins and starfish), cnidarians (jellyfish and corals) and porifers (better known as sponges).

Below we will show you a list with examples and names of more than 10 invertebrate animals:

  • Octopus
  • Mosquito
  • Bee
  • Ant
  • Spider
  • jellyfish
  • Sea urchin
  • Snail
  • Coral
  • Ground slug
  • Oyster
  • Mussel
  • Giant squid
  • Scorpion
  • Scorpion
  • Dragon-fly
  • Praying mantis
  • Crab
  • Locust
  • Irons
  • Grasshopper
  • Fly
  • Butterfly
  • Stick insect

If you want to read more articles similar to Examples of vertebrate and invertebrate animals, we recommend that you enter our Curiosities section of the animal world.