Did you notice a difference between the cell walls and the plasma membrane of the animal and plant cell? If yes, what difference?

the answer would be..

b. sucking

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms