Respiratory Adaptations: Altitude and Diving · NCERT Biology

Which adaptation allows aquatic mammals like whales to remain submerged for long durations?

  1. Higher lung volume relative to overall body size
  2. Increased myoglobin concentration in muscles
  3. Lower oxygen-carrying capacity of the blood
  4. Permanently reduced metabolic rate at rest and activity
Show answer and explanation

Correct answer: Increased myoglobin concentration in muscles

High myoglobin levels store oxygen in muscles. This supports aerobic respiration during prolonged dives.

Difficulty: Medium Question 10 of 20

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