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Which one is correctly matched ? (a) Sco...

Which one is correctly matched ?
(a) Scorpion, Spider, Cockroach - Ventral solid central nervous system
(b) Cockroach, Locust, Taenia - Metameric segmentation
(c) Liverfluke, Sea Anemone, sea Cucumber - Bilateral symmetry
(d) Centipede, prawn, Sea Urchin - Jointed appendages

A

Scorpion, Spider, Cockroach - Ventral solid central nervous system

B

Cockroach, Locust, Taenia - Metameric segamentation

C

Liverfluke, Sea Anemone, sea Cucumber - Bilateral symmetry

D

Centipede, prawn, Sea Urchin - Jointed appendages.

Text Solution

AI Generated Solution

The correct Answer is:
To determine which option is correctly matched, we will analyze each option one by one. ### Step-by-Step Solution: 1. **Option (a): Scorpion, Spider, Cockroach - Ventral solid central nervous system** - Scorpions, spiders, and cockroaches all belong to the phylum Arthropoda. - They possess a ventral solid central nervous system, which includes a double solid structure known as a circumventeric ring and a mid-ventral nerve cord. - **Conclusion**: This option is correctly matched. 2. **Option (b): Cockroach, Locust, Taenia - Metameric segmentation** - Cockroaches and locusts are arthropods and exhibit metameric segmentation, meaning their bodies are divided into segments. - However, Taenia (a type of flatworm) does not have metameric segmentation; it is unsegmented. - **Conclusion**: This option is incorrectly matched. 3. **Option (c): Liverfluke, Sea Anemone, Sea Cucumber - Bilateral symmetry** - The liver fluke does exhibit bilateral symmetry. - However, the sea anemone and sea cucumber exhibit radial symmetry, not bilateral. - **Conclusion**: This option is incorrectly matched. 4. **Option (d): Centipede, Prawn, Sea Urchin - Jointed appendages** - Centipedes and prawns are both arthropods and possess jointed appendages. - Sea urchins, however, are echinoderms and do not have jointed appendages. - **Conclusion**: This option is incorrectly matched. ### Final Answer: The only correctly matched option is **(a) Scorpion, Spider, Cockroach - Ventral solid central nervous system**. ---
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