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.
--------
Question: In harmonic motion there is always what force, which acts in the opposite direction of the velocity?

Answer: magnetic force

Question: A unique characteristic of mammals is the ability to chew, this happens by the temporalis and the masseter allowing what?

Answer: Up and down

Question: What does the central cell develop into after double fertilization?

Answer:
endocell