Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature ?

Options

A. `{:("Animals","Morphological feature"),("Cockroach Locust Taenia","Metameric segmentation"):}`
B. `{:("Animals","Morphological feature"),("Liver fluke sea anemone sea cucumber ","Bilateral symmety"):}`
C. `{:("Animals","Morphological feature"),("Centipeda,Prawn ,sea urchin","Jointed appendages"):}`
D. `{:("Animals","Morphological feature"),("Scorpion,Spider,Cockroach","Ventral solid central nervous system"):}`

Answer

To solve the question regarding which group of three animals is correctly matched with their characteristic morphological feature, we can follow these steps:

### Step 1: Analyze the First Group
- **Animals**: Cockroach, Leech, Taenia
- **Features**:
- Cockroach: Belongs to Phylum Arthropoda, characterized by jointed appendages.
- Leech: Belongs to Phylum Annelida, characterized by metameric segmentation.
- Taenia: Belongs to Phylum Platyhelminthes, which does not have metameric segmentation.

**Conclusion**: This group is incorrectly matched because Taenia does not have metameric segmentation.

### Step 2: Analyze the Second Group
- **Animals**: Liver Fluke, Sea Anemone, Sea Cucumber
- **Features**:
- Liver Fluke: Belongs to Phylum Platyhelminthes, which has bilateral symmetry.
- Sea Anemone: Belongs to Phylum Cnidaria, which exhibits radial symmetry.
- Sea Cucumber: Belongs to Phylum Echinodermata, which also exhibits radial symmetry.

**Conclusion**: This group is incorrectly matched because the liver fluke has bilateral symmetry, while the other two have radial symmetry.

### Step 3: Analyze the Third Group
- **Animals**: Centipede, Prawn, Sea Urchin
- **Features**:
- Centipede: Belongs to Phylum Arthropoda, characterized by jointed appendages.
- Prawn: Also belongs to Phylum Arthropoda, characterized by jointed appendages.
- Sea Urchin: Belongs to Phylum Echinodermata, which does not have jointed appendages.

**Conclusion**: This group is incorrectly matched because the sea urchin does not have jointed appendages.

### Step 4: Analyze the Fourth Group
- **Animals**: Scorpion, Spider, Cockroach
- **Features**:
- Scorpion: Belongs to Phylum Arthropoda, has a ventral solid central nervous system.
- Spider: Also belongs to Phylum Arthropoda, has a ventral solid central nervous system.
- Cockroach: Also belongs to Phylum Arthropoda, has a ventral solid central nervous system.

**Conclusion**: This group is correctly matched because all three animals have a ventral solid central nervous system.

### Final Answer
The correct answer is the fourth group: **Scorpion, Spider, and Cockroach**.

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