How does insects overcome growth restriction due to non living exoskeleton ?
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heyy dear ur answer.......
1. Exoskeletons are heavy, even the lighter versions without calcium that insect have, comparative to bones (that can be very light, and still sturdy, think of birds, for example), not just because of chitin but also because it needs to cover the whole animal. If a locust or a spider were as big and heavy as a human, their muscles couldn't be large or strong enough to support themselves. They wouldn't be able to move much. Exoskeletons work for insects because they are small, and small muscles are stronger than bigger muscles in proportion (i.e. a muscle that is half as big has more than half the strength of the muscle that is twice as big).
2. The molting problem. It is a very costly process, biologically speaking. It costs a lot of energy, and also creates a huge vulnerability. Can you imagine a cockroach as big as a human trying to hide somewhere while it molts? Interestingly, molting is a very complex process. The muscle attachments to the inside of the exoskeleton need to re-form every time the animal molts. ..........i hope it will help u @kundan ....thanku so much
1. Exoskeletons are heavy, even the lighter versions without calcium that insect have, comparative to bones (that can be very light, and still sturdy, think of birds, for example), not just because of chitin but also because it needs to cover the whole animal. If a locust or a spider were as big and heavy as a human, their muscles couldn't be large or strong enough to support themselves. They wouldn't be able to move much. Exoskeletons work for insects because they are small, and small muscles are stronger than bigger muscles in proportion (i.e. a muscle that is half as big has more than half the strength of the muscle that is twice as big).
2. The molting problem. It is a very costly process, biologically speaking. It costs a lot of energy, and also creates a huge vulnerability. Can you imagine a cockroach as big as a human trying to hide somewhere while it molts? Interestingly, molting is a very complex process. The muscle attachments to the inside of the exoskeleton need to re-form every time the animal molts. ..........i hope it will help u @kundan ....thanku so much
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The insects overcome growth restriction due to nonliving exoskeleton by process called as MOULTING.
Explanation:
Unlike human beings who exoskeleton is living and it grows as the human body grows, the insects have exoskeleton which is non-living. As the exoskeleton is non-living, it doesn’t grow as the insect grows.
In order to overcome this restriction, the insets undergoes a phenomenon called as moulting in which it sheds it old light and thin exoskeleton and build up a new one which is thick, bigger and harder than the previous exoskeleton.
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