| Phylum | Level of Organization | Symmetry | Coelom | Segmentation | Digestive System | Circulatory System | Respiratory System | Distinctive Features |
|---|---|---|---|---|---|---|---|---|
| Porifera | Cellular | Various | Absent | Absent | Absent | Absent | Absent | Body with pores and canal system |
| Cnidaria | Tissue | Radial | Absent | Absent | Incomplete | Absent | Absent | Cnidoblasts present |
| Ctenophora | Tissue | Radial | Absent | Absent | Incomplete | Absent | Absent | Comb plates for locomotion |
| Platyhelminthes | Organ/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 | Metameric segmentation |
| Arthropoda | Organ-system | Bilateral | Coelomate | Present | Complete | Present | Present | Exoskeleton of chitin,jointed appendages |
| Mollusca | Organ-system | Bilateral | Coelomate | Absent | Complete | Present | Present | External shell usually present |
| Echinodermata | Organ-system | Radial | Coelomate | Absent | Complete | Present | Present | Water vascular system |
| Hemichordata | Organ-system | Bilateral | Coelomate | Absent | Complete | Present | Present | 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-$II$ |
| $(1)$ Reptilia | $(A)$ Jellyfish |
| $(2)$ Porifera | $(B)$ Leech |
| $(3)$ Coelenterata | $(C)$ Hyalonema |
| $(4)$ Annelida | $(D)$ Crocodile |
| Column-$I$ | Column-$II$ |
| $I.$ Skin without scales | $p.$ $Catla$ |
| $II.$ Placoid scales | $q.$ $Hagfish$ |
| $III.$ Cycloid scales | $r.$ $Chameleon$ |
| $IV.$ Epidermal scales | $s.$ $Ray-fish$ |
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