Can mollusk shells, crayfish (crabs) shells, vertebrate bones grow?
| June 10, 2021 | education
The shells of mollusks are prone to growth – you can even find so-called “annual rings or lines” on them, the internal skeleton of bones also grows, but the chitinous cover does not stretch, so crustaceans have to molt – shed the old cover and build up a new one. It is not very convenient compared to the internal skeleton.
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