1. They have segmented bodies and tough skeleton with jointed appendages.


2. They have rasping structure called Radula.


3. They have a water vascular system.


4. They have structure like needle called spicules.


5. They are made up of tissue and have radial symmetry.


6. They have a thin flat body that resembles a ribbon and have a definite head region and body organs.


7. They are covered with tough cuticle.


8. Their bodies are divided into segments with a ringed appearance.


9. Cannot be seen by the naked eyes.


CHOICES:


A. protozoans B. annelids


C. arthropods D. cnidarians


E. nematodes F. echinoderms


G. platyhelminthes H. mollusks


I. poriferans


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