Which term means the ability to detect and respond to changes in the environment?

Which term means the ability to detect and respond to changes in the environment?

• A. Nutrition
• B. Sensitivity
• C. Movement
• D. Ingestion

Answer: (B)

Detecting and responding to changes in the surroundings is about sensitivity. It means an organism can notice stimuli such as light, heat, or touch and then act on that information. Receptors detect the signals, nerves or signaling pathways carry the message, and effectors produce a response—like moving your hand away from something hot or a plant growing toward a light source. Nutrition and ingestion describe taking in and using food, while movement is simply changing position. Sensitivity specifically covers sensing changes and producing an appropriate response.

Detecting and responding to changes in the surroundings is about sensitivity. It means an organism can notice stimuli such as light, heat, or touch and then act on that information. Receptors detect the signals, nerves or signaling pathways carry the message, and effectors produce a response—like moving your hand away from something hot or a plant growing toward a light source. Nutrition and ingestion describe taking in and using food, while movement is simply changing position. Sensitivity specifically covers sensing changes and producing an appropriate response.