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Question
Spicules of silica occur in
Spicules of silica occur in
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Solution
The correct option is A Hyalonema
Hyalonema is a marine form found 10-15 meters deep in the sea. Its skeleton consists of small spicules, which are siliceous in nature (consisting of silica). It has a rounded or oval body with a spirally twisted root tuft. Spicules of root tuft continue through the sponge body as an axis or columella and projects above as a gastral cone. Root spicules are compact, stalk-like and twisted giving the appearance of a rope. The middle part of columella has symbiotic polypsSo, the correct answer is 'Hyalonema'
Hyalonema is a marine form found 10-15 meters deep in the sea. Its skeleton consists of small spicules, which are siliceous in nature (consisting of silica).
It has a rounded or oval body with a spirally twisted root tuft. Spicules of root tuft continue through the sponge body as an axis or columella and projects above as a gastral cone. Root spicules are compact, stalk-like and twisted giving the appearance of a rope. The middle part of columella has symbiotic polyps
So, the correct answer is 'Hyalonema'
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