Given a scientific question, generate an incorrect answer to the given question. The incorrect answer should be a plausible alternative to the correct answer. The answer should be some other item belonging to the same category as the correct answer but should be incorrect.

Example Input: Each pollen grain has two coverings: the exine (thicker, outer layer) and the what?
Example Output: tube nucleus

Example Input: Which vertebrae carry the greatest amount of body weight and are thus characterized by the large size and thickness of the vertebral body?
Example Output: artery vertebrae

Example Input: Which bones are the large, curved bones that form the lateral and anterior aspects of the pelvis?
Example Output:
foot