| Phylum | Level of Organisation | Symmetry | Coelom | Segmentation | Digestive System | Circulatory System | Respiratory System | Distinctive Features |
|---|---|---|---|---|---|---|---|---|
| Porifera | Cellular | Various | Absent | Absent | Absent | Absent | Absent | Body with pores and canals in walls |
| Coelenterata | Tissue | Radial | Absent | Absent | Incomplete | Absent | Absent | Cnidoblasts present |
| Ctenophora | Tissue | Radial | Absent | Absent | Incomplete | Absent | Absent | Comb plates for locomotion |
| Platyhelminthes | Organ and Organ System | Bilateral | Absent | Absent | Incomplete | Absent | Absent | Flat body,suckers |
| Aschelminthes | Organ System | Bilateral | Pseudocoelomate | Absent | Complete | Absent | Absent | Often worm-shaped,elongated |
| Annelida | Organ System | Bilateral | Coelomate | Present | Complete | Present | Present | Body segmentation like rings |
| Arthropoda | Organ System | Bilateral | Coelomate | Present | Complete | Present | Present | Exoskeleton of cuticle,joined appendages |
| Mollusca | Organ System | Bilateral | Coelomate | Absent | Complete | Present | Present | External skeleton of shell usually present |
| Echinodermata | Organ System | Radial (Adult) | Coelomate | Absent | Complete | Present | Present | Water vascular system |
| Hemichordata | Organ System | Bilateral | Coelomate | Absent | Complete | Present | Present | Worm-like with proboscis,collar,and trunk |
| Chordata | Organ System | Bilateral | Coelomate | Present | Complete | Present | Present | Notochord,dorsal hollow nerve cord,gill slits |
Explore More
| Column-$I$ | Column-$II$ (Phylum) | Column-$III$ (Example) |
|---|---|---|
| $I$. Water canal system | $a$. Porifera | $p$. Sea lily |
| $II$. Proboscis | $b$. Hemichordata | $q$. Sepia |
| $III$. Water vascular system | $c$. Mollusca | $r$. Sycon |
| $IV$. Shell | $d$. Echinodermata | $s$. Balanoglossus |
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