Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

The vascular structure functions as a framework that reinforces the shape of the leaf.
What functions as a framework that reinforces the shape of the leaf?

Seed -> young plant -> adult plant sequence shows the order of stages in a plant’s life cycle.
Which sequence shows the order of stages in a plant’s life cycle?

Antibodies bind to foreign substances and attempt destruction.

What type of proteins bind to foreign substances and attempt destruction?