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Classification of Phylum Porifera is bas...

Classification of Phylum Porifera is based on

A

canal system

B

spicules

C

shape of choanocytes

D

myocytes

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Phylum Porifera**: - Phylum Porifera, commonly known as sponges, is a group of simple aquatic animals characterized by a porous body structure. 2. **Classification Basis**: - The classification of organisms within Phylum Porifera is primarily based on certain structural features. 3. **Identifying the Classes**: - Phylum Porifera is divided into three main classes: - **Calcarea**: This class is characterized by the presence of calcareous (calcium carbonate) spicules. - **Hexactinellida**: Members of this class possess siliceous (silicon dioxide) spicules. - **Demospongiae**: This class can have either spongin fibers, siliceous spicules, or both. 4. **Conclusion**: - The classification of Phylum Porifera is based on the type of spicules present in the organisms. Therefore, the correct answer to the question is **option B: spicules**. ---
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