Tissue level of organization is found in

Options

A. Porifera
B. Coelenterata
C. Annelida
D. Vertebrata

Answer

**Step-by-Step Solution:**

1. **Understanding Tissue Level of Organization**: The tissue level of organization refers to a group of similar cells that work together to perform a specific function. This is a higher level of organization than the cellular level, where individual cells operate independently.

2. **Identifying Animal Phyla**: In the animal kingdom, organisms are classified into different phyla based on their body organization. The first phylum, Porifera (sponges), exhibits a cellular level of organization, meaning they do not have true tissues.

3. **Recognizing Organisms with Tissue Level**: After Porifera, the next phylum is Cnidaria, which includes organisms like jellyfish and hydra. These organisms exhibit a tissue level of organization, where cells are organized into tissues that perform specific functions.

4. **Comparing with Higher Levels of Organization**: Higher phyla, such as Annelida (segmented worms) and vertebrates, display an organ system level of organization, which is more complex than the tissue level.

5. **Conclusion**: Therefore, the tissue level of organization is found in members of the phylum Cnidaria, such as jellyfish and hydra.

**Final Answer**: The tissue level of organization is found in organisms of the phylum Cnidaria, such as jellyfish and hydra.

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