Final answer:
Exoskeletons in invertebrate animals are made of a strong and flexible substance called chitin. They provide protection and support but also limit the growth of the organism. Molting is necessary for growth but leaves the organism vulnerable to predators.
Step-by-step explanation:
An exoskeleton is an external skeleton found in a variety of invertebrate animals such as insects and crustaceans. It is made of a tough, lightweight substance called chitin, which is extremely strong and flexible. The exoskeleton protects against physical damage, such as injuries or predators, and also provides support and structure for the organism. However, one disadvantage of having an exoskeleton is that it limits the growth of the organism. As the arthropod grows, the exoskeleton must become thicker to bear the force from the increased weight, which can restrict movement and put the organism at a disadvantage in certain situations. To grow, the arthropod must undergo molting, a process in which it sheds its old exoskeleton and grows a new one. During this time, the organism is extremely vulnerable to predators.
Learn more about Exoskeletons in invertebrate animals