What is a muted response?

A response is when someone is talking and you or the other person talk back and respond to what the other person had said. ------------------------------------------ A response is an animal's...

(an act of replying to a question by way of speech)

False for A~plus

Hydrotropism is the plant's response to water or sunlight.

It's just a way of saying that a neuron (or sensory cell) can either (only) respond or not respond (depending on the strength of the stimuli). Which is why your nervous system is said to be pulse...