Question

Euplectella has a

• A. Calcareous skeleton
• B. Siliceous skeleton
• C. Bony skeleton
• D. Cartilaginous skeleton

Answer 1

The correct option is B Siliceous skeleton

A. Calcareous skeleton is found in sponges of class Calcarea. For example, Leucosolenia.

B. Siliceous skeleton is found in sponges of class Hexactinellida and Demospongiae. For example, Euplectella.

C. Bony skeleton is found in vertebrates that include reptiles, mammals, amphibians and fishes.

D. Cartilaginous skeleton is found in fishes of class Chondrichthyes.

So, the correct answer is 'Euplectella'.