Which term describes the self-directed movement of organisms?

Which term describes the self-directed movement of organisms?

• A. Motility
• B. Growth
• C. Metabolism
• D. Respiration

Answer: (A)

Motility describes self-directed movement. It’s the organism’s ability to move on its own, using structures like flagella, cilia, or amoeboid motion to navigate toward favorable conditions or away from stress. Growth is about getting larger or producing more cells, metabolism covers all the chemical reactions that keep the organism alive, and respiration is the energy-producing process that usually involves taking in oxygen (or managing energy without it). So the term that best fits self-directed movement is motility.

Motility describes self-directed movement. It’s the organism’s ability to move on its own, using structures like flagella, cilia, or amoeboid motion to navigate toward favorable conditions or away from stress. Growth is about getting larger or producing more cells, metabolism covers all the chemical reactions that keep the organism alive, and respiration is the energy-producing process that usually involves taking in oxygen (or managing energy without it). So the term that best fits self-directed movement is motility.