what r ambulacral ossicles?what is its importance in phylum echinodermata?

jelly fish belongs to which animal phylum?

What are the general characters of protozoa phylum ?

what plant phylum bambusa textilis belongs to?

In the plant kingdom how many phylums are there, Orders,Classes?

The phylum chordate is characterized by the presence of 1 Spinal cord 2 Notochord 3 Nerve chord 4 None of these

Define what is animals belonging to phylum annelida are commonly known?