Identify the wrong match

Options

A. Porifera - spicules
B. Ctenophora - bioluminescence
C. Mollusca -chitinous shell
D. Annelida - nephridia

Answer

### Step-by-Step Solution:

1. **Understand the Question**: The question asks to identify the wrong match from a list of pairs related to animal phyla and their characteristics.

2. **Analyze Each Option**:
- **Option A**: Phylum Porifera matched with Spikeules.
- **Explanation**: Porifera, commonly known as sponges, have an exoskeleton made of spikeules (also known as spongin fibers). This is a correct match.

- **Option B**: Phylum Stenophora matched with Bioluminescence.
- **Explanation**: Stenophora, also known as comb jellies, exhibit bioluminescence, meaning they can emit light. This is also a correct match.

- **Option C**: Phylum Mollusca matched with Chitinous Shell.
- **Explanation**: Mollusca, such as snails, possess a calcareous shell, not a chitinous one. Chitinous shells are characteristic of Arthropoda, not Mollusca. This indicates that this is a wrong match.

- **Option D**: Phylum Annelida matched with Nephridia.
- **Explanation**: Nephridia are indeed the excretory organs found in Annelida (segmented worms), making this a correct match.

3. **Identify the Wrong Match**: After analyzing all options, the wrong match is found in Option C: Mollusca matched with Chitinous Shell.

### Final Answer:
The wrong match is **Option C: Mollusca matched with Chitinous Shell**.

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