A water vascular system is characteristically present in:

1. Annelids 2. Porifers
3. Echinoderms 4. Cartilaginous fishes
Subtopic:  Phylum Echinodermata |
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Which of the following will be correct regarding Echinoderms?
1. They have bilateral symmetry as adults and radial symmetry as larvae.
2. They are triploblastic and coelomates.
3. They possess a well-developed excretory system.
4. They have an incomplete digestive system.
Subtopic:  Phylum Echinodermata |
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