Moulting - the shedding of the entire outer casing. The arthropod grows a new 'skin' underneath the old one. At the time the old casing is shed, the new one is sof and pliable. It hardens within a few minutes to restore the protection that the 'shell' normally provides.
According to Biologists, arthropods must undergo a molting process where they shed their exoskeletons in order for them to grow.
to grow
When it grows to big for its exoskeleton, like a hermit crab.
as they grow
Arthropods grow by shedding their exoskeleton. Only when they shed can their bodies grow. Arthropods are very vulnerable to predators while molting so they have to have a predetermined place to hide before shedding begins.
it grow a new exoskeleton
Yes, owing to their hard chitinous exoskeleton, arthropods are compelled to shed (moult) periodically in order to grow, a process called ecdysis.
Organisms that produce starch are arthropods. Arthropods are insects and crustaceans. Plants also produce starch. It is the way plant stems grow.
Since the external covering (exoskeleton) is inflexible, it's necessary for arthropods to periodically shed it (moult) in order to grow, a process called ecdysis.
Since arthropods have a rigid exoskeleton, in order to grow they need to moult their entire skin, then wait for the new exoskeleton to harden. Some of them eat the old exoskeleton in order to recapture the mineral content. Since many (like the crustaceans) are vulnerable during this stage, they need to hide for a while. The moulting process for some arthropods also integrates with the limb regeneration function.
three
The body of arthropods is physically supported by an external skeleton (exoskeleton) made of a tough protein called chitin. Because it is inflexible, arthropods need to shed it entirely in order to grow in size.