The difference between a structure that is rigid and one that is flexible is that the rigid structure will not bend or flex when force is applied. A structure that is rigid cannot flex.
cartilage
cartiliage <apex>
the cell membrane
The flexible, supporting structure found only in chordates is called the notochord. The notochord is located between the nerve cord and the digestive track.
Because of the lattice structure of the cystal's molecules.
Cell membrane.
lens
Cartilage
Is a flexible, supporting structure
Yes, it is. It is somewhat like cartilage.
The cell membrane holds a cell together.