1. | exhibit radial symmetry as adults |
2. | have segmented bodies |
3. | are diploblastic |
4. | are coelomates |
1. | Cyclostomata | 2. | Chondrichthyes |
3. | Amphibia | 4. | Reptilia |
1. | Aschelminthes | 2. | Molluscs |
3. | Annelids | 4. | Chordates |
Column I | Column II | ||
A. | Comb plates | P. | Cnidaria |
B. | Metagenesis | Q. | Mollusca |
C. | Canal system | R. | Sponges |
D. | Radula | S. | Ctenophora |
A | B | C | D | |
1. | S | P | R | Q |
2. | P | S | R | Q |
3. | P | S | Q | R |
4. | S | P | Q | R |
1. | Single |
2. | Hollow |
3. | Ventral |
4. | Derived from embryonic ectoderm |
1. | have a well developed excretory system |
2. | exhibit bilateral symmetry as adults |
3. | have an endoskeleton of calcareous ossicles |
4. | are all fresh water species |