Question

What feature do plants have that provide structure and form?

a.plants have an exoskeleton, like insects.
b.plants have an internal skeleton of bones.
c.plants have rigid tubes made of cellulose.
d.plants have an external covering that keeps them upright

Answer 1

It should be a.), all plant cells have a cell wall made of cellulose, which acts as exoskeleton and makes them so stable. However on a bigger level this plant cells can also form cellulose fibers, so that c.) is not completely false :)