Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Diffraction is the phenomenon in which light and sound waves become circular at the point source of a barrier.

Answer: What is the phenomenon in which light and sound waves become circular at the point source of a barrier?


Question: Seedless and seed are the two divisions of vascular plants.

Answer: What are the two divisions of vascular plants?


Question: Most lipids in your diet should be unsaturated type, found mainly in plant sources and also in fish.

Answer:
Most lipids in your diet should be what type, found mainly in plant sources and also in fish?