An animal that have an external skeleton is termed as arthropods, they are invertebrate creatures who are often classified with joined appendages as well as segmented body. Many creatures fall in the group of arthropods such as insects, reptiles, aquatic mammals and many more. There are mainly four major classes of arthropods such as Chelicerates which includes mites, spiders, scorpions, horse shoe crabs and many more. Another type of arthropods is Trilobites which is already an extinct species, Crustaceans are another such type which includes crabs, lobsters, shrimps etc and lastly there are Uniramians which includes centipedes, millipedes and many other insects are there in this group. Here are few arthropods characteristics that you should know in case you face one:Bilateral symmetry:
If you have observed an arthropod then you must have noticed that the left side of the body of an arthropod is exactly symmetrically same like the right side of their body. There is nothing different not ever internally, the internal difference make most animals different from that of an arthropod. The arrangement of legs, stings, eye and every single thing seems to be same in both the sides of their body.
Source – arthropods.weebly.com
Developed sense organs:
These animals are often small and mostly get attacked or mistakenly killed by many because we people not always notice them and end up stepping on them causing their death. We cannot help it but they know how to survive and their extremely sensible organs help them a lot. They can sense each and everything so even if you could not sense their presence they would sense that you are coming and would immediately leave you path so that they could save their life. They even have some safety measures as well as some weapons which help them a lot to survive. Some of them can bite you dangerously which can cause intense pain and even infections are common in this situation and they often would bite you make you aware about their presence.
Ventral nervous pattern:
The word ventral stands for in front so it means that the nervous system of an arthropod runs through the front section of their body unlike other animals which have their nervous system running through the spinal cords of their body. These small things make an arthropod quite different from other animals as well as living creatures.
General information about arthropods:
Arthropods are such type of animals or living creature that can develop anywhere and can survive in water, land, and they sometime can even survive under the soil, for some of them flying are common so they can even survive high above the land level. You would notice joint limbs in them and their whole body can be divided in to just three sections such as thorax, head as well as the abdomen. The most surprising thing about them is that they too have blood which is known by the name of haemocoel and it is colored in white. They have exoskeleton that is made up with chitin and it is usually hard so that the skeleton can save their internal organ as well as them from getting hurt as well as damaged. They have much developed brain which send them frequent signals and make them alert about the surrounding.
These were few information about arthropods that you should know and next time be careful from them as they can bite you to let you aware of their presence around you.