What type of respiratory structures are used by most aquatic arthropods and molluscs?

What type of respiratory structures are used by most aquatic arthropods and molluscs?
  1. Lungs
  2. Moist skin
  3. Gills
  4. Tracheal tubes

Solution

Most aquatic arthropods and molluscs use special vascularised structures called gills for exchanging gases.

Asked in: NCERT

Practice more Breathing and Exchange of Gases questions on Aicharya