Answer:
cause they use the small one for feeding and the large one to attract a female crab for mating, the large claws are also used as a weapon
Organ level of organization/Organ
I think the correct answer among the choices listed above is option B. For photoperiodism to occur, a plant must use a phytochrome. This is a pigment that plants use to detect light. It is sensitive to light in the red region. Hope this answers the question.