Muscle & Nervous Tissues

The correct answer is 'conductivity'. This is a characteristic of nervous tissue, not muscle tissue. While both muscle and nervous tissue are highly cellular and excitable, only nervous tissue has the unique ability to conduct electrical impulses, allowing for rapid communication between different parts of the body.

Excitability is a characteristic shared by both muscle and nervous tissues. It refers to the ability of these tissues to respond to stimuli. This property allows muscles to contract and nerves to transmit signals, making it a fundamental feature of both these tissue types.