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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Answer:
1. C. Arthropods
2. H. Mollusks
3. F. Echinoderms
4. D. Cnidarians
5. I. poriferans
6. G. platyhelminthes
7. A. protozoans
8. B. Annelids
9. E. Nematodes
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