Question

Root tuft of spicules occur in

• A. Cliona
• B. Hyalonema
• C. Euplectella
• D. Both B and C

Answer 1

Answer: (D)

Both B and C

• Root tuft of spicules occur in sponges belonging to class Hexactinellida. For example, Hyalonema and Euplectella. The body form of Hyalonema is much similar to Euplectella except that Euplectella has amphidiscs along with other type of spicules. The body of these sponges is elevated from the substratum with the help of a root tuft which is often spirally twisted like a rope.

Root tuft of spicules occurs in Hyalonema and Euplectella. Thus, both options B and C are correct.

So, the correct answer is 'Both B and C'.