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.

[EX Q]: What is defined as the change of water from its liquid phase to its gaseous phase?
[EX A]: absorption

[EX Q]: Each pollen grain has two coverings: the exine (thicker, outer layer) and the what?
[EX A]: tube nucleus

[EX Q]: What type of pressure is the pressure exerted by gas particles in earth's atmosphere as those particles collide with objects?
[EX A]:
vertical pressure