A) Grantia
B) Sycon
C) Hyalonema
D) Leucosolenia
Correct Answer: C
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.
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