Which of the following is a characteristic of living organisms that is directly enhanced by regular physical training?

• A. Lack of cellular organization
• B. Production of inorganic molecules
• C. Ability to photosynthesize
• D. Ability to maintain homeostasis

Answer: (D)

Verified step by step guidance

1. Understand the concept of homeostasis: Homeostasis refers to the ability of living organisms to maintain a stable internal environment despite changes in external conditions. This includes regulating body temperature, pH levels, and other physiological processes.
2. Recognize the role of physical training: Regular physical training enhances the body's ability to maintain homeostasis by improving systems such as the cardiovascular, respiratory, and muscular systems. For example, exercise strengthens the heart and lungs, which helps regulate oxygen and carbon dioxide levels in the blood.
3. Eliminate incorrect options: Lack of cellular organization is not a characteristic of living organisms, as all living organisms are highly organized at the cellular level. Production of inorganic molecules is not a defining feature of living organisms, as they primarily produce organic molecules. The ability to photosynthesize is specific to plants, algae, and some bacteria, not all living organisms.
4. Connect physical training to homeostasis: Physical training improves the body's efficiency in maintaining homeostasis. For instance, it enhances thermoregulation (e.g., sweating to cool down) and metabolic processes, which are critical for maintaining a stable internal environment.
5. Conclude that the correct answer is 'Ability to maintain homeostasis,' as this is the characteristic of living organisms directly enhanced by regular physical training.