NEETZoologyBreathing and Exchange of Gases
Animal Group Respiratory Mechanism A. Earthworms 1. Tracheal tubes for air transport B. Sponges and Coelenterates 2. Simple diffusion over the entire body surface C. Aquatic Arthropods and Molluscs 3. Gills for gas exchange D. Insects 4. Moist cuticle for gas exchange
Options
- AA-2; B-4; C-3; D-1
- BA-4; B-3; C-2; D-1
- CA-4; B-2; C-1; D-3
- DA-4; B-2; C-3; D-1
Correct answer
D. A-4; B-2; C-3; D-1
Step-by-step solution
Earthworms use their moist cuticle for gas exchange. Sponges and coelenterates exchange gases through simple diffusion over their entire body surface. Aquatic arthropods and molluscs use gills for gas exchange. Insects have a network of tracheal tubes for air transport within the body.