It has a rigid skeleton but the body is flexible.
internal skeleton
They both perform the function of providing a rigid structure.
The anatomical feature is a "rigid skeleton" (as opposed to a flexible one).
Some are: movement flex bones Gives skeleton mobility hold the skeleton together
Yes Yes it does All insects and arachnids are invertebrates and have exoskeletons.
Sponges don't have skeletons! They are invertebrates which means the creature doesn't have a backbone, but in this case, it doesn't have a skeleton! (I think this is right, I apologize if it isn't)
The spike forms a rigid frame that helps support and protect the sponges body.
Yes. They're fairly similar to crabs and shellfish in that matter. No skeleton but a rigid hinged "skin" instead.
the bones are rigid --------- I think a better way to answer this is they are rigid, but both curved and straight. Have you ever seen a picture of the femur, the pelvis, or the scapula? What about the clavicle? These bones, as all bones are, are rigid. They hold their shape (unlike the cartilage of the ear or nose) but are curved. A rigid straight bone could be named as the phalanges, or the humerus (MAYBE). I mean, even the radius and ulna are curved a small amount.
Because a plant has no skeleton, its support is found in it's cells. The cells have a rigid cell wall for support and structure.
The Venus Flytrap is a plant and so does not have a skeleton in the usual sense that we think of, that is bones. Plant cells have cellulose in their cell walls which allow them to form rigid structures and stand without the need for an internal skeleton.