Which skeletal element of sponges is made of a sulfur-containing protein and gives them a 'spongy' texture?
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Correct answer: Spongin fibers
Spongin is a modified form of collagen protein. It forms a fibrous network that provides structural support in many Demospongiae, the class to which common bath sponges belong.
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More Protista, Porifera, Cnidaria: Features questions
- Which specialized cell type in Porifera is responsible for creating water currents and capturing food particles?
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- Which of the following body forms in Cnidaria is typically sessile and reproduces asexually?
- Sponges are classified into different classes primarily based on the composition of their:
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- The central cavity of a sponge, through which water flows before exiting, is called the: