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Q.
Spicules made up of silica are found in
VMMC MedicalVMMC Medical 2014
Solution:
In Hyalonema siliceous, spicules are found. Hyalonema is a member of class-Hexactinellida of phylum Porifera. The main characterstic feature of class; Hexactinellida is the presence of siliceous spicules.