Question

Different biological variables at individual level used as indicators, except one is given below:

• A. Demographic indicators
• B. Physiological indicators
• C. Behavioral indicators
• D. Biochemical indicators

Hint:

Individual = “Inside the body/behavior”; Demographic = “The whole group/population”.

Answer 1

The Correct Option is A

Step 1: Concept
Biological indicators are measurable traits or responses of organisms used to assess environmental health.

Step 2: Meaning
Indicators at the “individual level” focus on internal processes or specific actions of a single organism.

Step 3: Analysis
Physiological, behavioral, and biochemical variables all measure changes within or by a single individual. Demographic indicators (birth rates, death rates, age distribution) apply to populations rather than individuals.

Step 4: Conclusion
Demographic indicators are the exception as they represent the population level.

Final Answer: (A)