NCERT · Class 11 · Biology · Animal KingdomWhich of the following animal groups is exclusively marine?
Step-by-Step Solution
Echinodermata is an exclusively marine phylum. Organisms belonging to this phylum, such as starfish, sea urchins, and sea cucumbers, live exclusively in marine habitats and are not found in fresh water or terrestrial environments.
Detailed Options Breakdown
Option : Porifera
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Animal Kingdom.
Option 1: Echinodermata (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Mollusca
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Animal Kingdom.
Option 3: Annelida
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Animal Kingdom.
💡 Study Guide: This question tests core syllabus concepts from Animal Kingdom. For formulas, key summaries, and mock exam reference guides, read the full Animal Kingdom Revision Notes.