Q.1. State location and function-
iv) jacobson's organ
Q.2. Differentiate between the following-
i) lung and swim bladder
ii) physostomous and physoclystous swim bladder
iii)lamelliform and filliform gills
Q.3. Diagram showin the evolution of swim bladder in fishes.
Q.4 Explain accessory respiratory organs in the fishes.
Q.5. Diagram showing the evolution of air bladder and lungs.