Assertion Analysis: Iron Needs

Assertion (A) states that the daily iron requirement for adolescent boys is slightly higher than for adolescent girls.

• Adolescence is a period of significant growth, increasing nutrient demands, including iron.
• Iron is essential for increased blood volume, muscle development, and overall growth.
• Research and nutritional guidelines generally indicate a higher Recommended Dietary Allowance (RDA) for iron for adolescent males compared to females, accounting for factors like increased lean body mass.

Therefore, Assertion (A) is considered true.

Reason Analysis: Muscle Mass Factor

Reason (R) suggests that adolescent boys possess greater muscle mass than adolescent girls of the same age.

• Physiological differences, influenced by hormones like testosterone, lead to greater development of lean body mass and muscle mass in boys during puberty compared to girls.
• Muscle tissue contains myoglobin, an iron-containing protein, essential for oxygen storage.

Therefore, Reason (R) is considered true.

Explanation Validity

The question asks if Reason (R) correctly explains Assertion (A).

• The higher muscle mass in adolescent boys directly contributes to their increased iron requirements, as iron is a key component of muscle tissue (myoglobin).
• This physiological difference (greater muscle mass) is a primary reason why boys need more iron than girls during adolescence.

Thus, Reason (R) provides a correct explanation for Assertion (A).

Conclusion

Based on the analysis, both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation for Assertion (A).

The correct option is that Both (A) and (R) are true and (R) is the correct explanation for (A).