Question

which examples demonstrate responses to stimuli? check all that apply. a venus flytrap closes on a fly. large amounts of bacteria are present in a soil sample. a plant grows toward the sunlight. a rabbit has both white and black fur. bright lights cause a baby to blink.

Explanation:

A response to a stimulus is a reaction of an organism to an external factor. A Venus fly - trap closing on a fly is a response to the presence of prey (stimulus). A plant growing toward sunlight is a response to the light stimulus (phototropism). A baby blinking in bright lights is a response to the light intensity (stimulus). The presence of bacteria in a soil sample is just a description of a situation and not a response to a stimulus. A rabbit having white and black fur is a genetic trait and not a response to a stimulus.

Answer:

A. A Venus flytrap closes on a fly.
C. A plant grows toward the sunlight.
F. Bright lights cause a baby to blink.