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An exoskeleton is a defense system for animals. The layman often calls the exoskeleton a shell. The exoskeleton provides flexibility to the joints of the underlying muscles. The function of the joints and muscles provides the animal with a wide range of motion. There are numerous insects, crustaceans and molluscs with exoskeletons.
Exoskeleton vs endoskeleton
Both the exoskeleton and the endoskeleton are bone structures that grow with the body. Endoskeletons are located inside the animal. Mammals have endoskeletons.
The exoskeleton develops around the animal’s outer skeleton. In invertebrates, the shell consists of proteins, minerals and carbohydrates. The exoskeleton of molluscs is a calcium carbonate shell.
With the help of the endoskeleton, the skeleton provides support that allows the body to support weight and facilitate movement. The skeleton facilitates movement using bony surfaces attached to the muscles. Vertebrates carry skeletal muscles that attach tendons to bones.
The exoskeleton supports internal organs and tissues. The exoskeleton can be flexible because it is not as strong as the endoskeleton. But, unlike the endoskeleton, the exoskeleton limits the size of the animal.
The shell is often lightweight, which facilitates movement. Arthropods have soft membranes in the joints. The utility allows the animal to flex its limbs.
Animals with exoskeletons
Anthropods make up nearly three-quarters of earthly creatures, and most animals have exoskeletons. Many of them are insects. This type contains centipedes, spiders and crustaceans. Some sea sponges produce exoskeletons. There are also molluscs with exoskeletons.
1. Crustaceans
The crustacean belongs to the group of arthropods. They live mainly in the oceans. You can also find them in fresh water.
Coconut crab
Coconut crabs actually climb coconut trees. The coconut crabs then use their powerful claws to crack open the coconut and eat the insides. Their forceps can lift your finger off your hand. Coconut crabs molt their exoskeleton and eat it.
European lobster
European lobster can live for up to a century and will continue to grow all the time. In the first five to seven years, lobsters shed their exoskeleton about two dozen times. Thereafter, an adult lobster sheds no more than twice a year.
Cancer
Crayfish, also known as crayfish, are a kind of mini lobster. They can be found in rivers, streams, streams, and other fresh water bodies. To grow, they molt their exoskeletons.
2. Insects
The largest group of arthropods on Earth, insects have a solid exoskeleton. The skeleton, made from chitin, supports and protects the body, which consists of the head, chest, and abdomen.
Grasshopper
Grasshoppers have solid exoskeletons to protect sensitive internal organs. Their large hind legs allow them to jump considerable distances. Some species of grasshoppers can fly.
Cicada
The cicada will live below the surface until the first 17 years of its life. As soon as it floats to the surface, the creature is sent on a mission to get rid of the exoskeleton. After the shell molts, they become adults and are now called nymphs. The exoskeleton remains attached to the tree they used to lose the outer skeleton.
ladybug
The exoskeleton of a ladybug is bright red with black dots. Their main function is to guard the creature’s wings. The wings are usually four times the size of the insect’s body. The exoskeleton also holds the ladybug’s body together in much the same way that the endoskeleton functions in mammals.
3. Arachnids
The family of spiders, belonging to the group of arthropods, is a relative of ticks, ticks, ticks and scorpions. They all have exoskeletons over their two-piece bodies. This is the abdominal cavity and cephalothorax. Unlike an insect, a spider has no antennae. They all walk on eight legs.
Brown hermit
The name comes from the brown recluse’s penchant for solitude. They can be identified by the violin-shaped markings on top of his exoskeleton. Only the brown recluse’s bites are non-venomous, and their teeth are so small that they don’t go through clothing.
Black Widow
One of the deadliest spiders in the world, black widows are infamous for eating their mates after successfully mating. Both men and women have a rugged exoskeleton made up of chitin and protein.
Emperor Scorpio
The emperor scorpion uses its tough carapace as an advantage against predators. The scorpion has very intimidating stings, but it relies more on its claws. Its sting is comparable to that of a bee, not particularly painful considering the size of the sting.
4. Molluscs
Shellfish are divided into two groups: cephalopods and gastropods. Both groups have hard-shell exoskeletons. The advantage of shells is that they serve as both protection and home. The exoskeleton is mainly composed of calcium.
Snails
All forms of snails – from giant sea snails to garden snails – have an exoskeleton. As with all snails, shells are the main defense. They also act like a home. Creatures can enter the shell like a turtle and approach. Unlike many exoskeleton creatures, the snail shell grows with the animal.
Oysters and shellfish
Many animals with shells have soft skin, and the exoskeleton is the first line of defense for their safety. We can only see shellfish and oysters as oily little slugs, but their systems are actually made up of the heart, mouth, stomach, and nervous system.
5. Centipedes and centipedes
It is not uncommon to confuse a centipede and a centipede. In fact, they are very different. The first thing that sets them apart is that centipedes have one pair of legs per segment. A centipede has only one. Another important difference is that centipedes are venomous, some are deadly, but centipedes are not.
Centipedes
The exoskeleton of the centipede is its strongest defense against anything that will happily eat it. When threatened, the insect curls into a ball. The action makes them less attractive and enhances the benefits of the projectile’s ability to protect their vulnerable underside.
Centipedes
Centipedes have the same protective cover as centipedes. The centipede has poison with which it kills its prey. The poison is not actually fatal to humans, although some species – such as the Asian forest centipede – can cause painful swelling. However, creatures usually avoid humans.
Next: what do lizards eat?
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