Adaptations for Aquatic and Aerial Movement · NCERT Biology

The 'lateral line system' in fishes is an adaptation that helps in movement by:

  1. Increasing swimming speed
  2. Detecting water currents and vibrations
  3. Regulating internal salt and water balance
  4. Absorbing dissolved oxygen from surrounding water
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Correct answer: Detecting water currents and vibrations

The lateral line system consists of sensory organs that detect pressure changes and vibrations in the water. This allows fish to orient themselves, avoid obstacles, and track prey or predators during locomotion.

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