Why Might Animal Hormones Function Differently from Plant Hormones

Multiple Choice

Why might animal hormones function differently from plant hormones?

A) Animals move rapidly away from negative stimuli, and most plants don't.
B) Plant cells have a cell wall that blocks passage of many hormones.
C) Plants must have more precise timing of their reproductive activities.
D) Plants are much more variable in their morphology and development than animals.
E) Both A and D are correct.