CONTENTS: 1. Introduction; 2. Class 1. Calcarea Type 1. Leucosolenia; 3. Class 1. Calcarea (Contd.) Type 2. Scypha (= Sycon); 4. CLass 1. Calcarea (Contd.); 5. Class 2. Hexactinellida; 6. Class 3. Demospongiae; 7. Canal System in Sponges; 8. Skeleton in Sponges; 9. Regeneration and Reproduction in Sponges; 10. Affinities, Origin and Systematic Position of Porifera; 11. Economic Importance of Porifera; Important Questions; Index.
| Specifications | |
| Author | Prof. R. L. Kotpal |
| Edition | 7th Edition |
| ISBN | 81-7133-731-7 |