Bilateral symmetry, cylindrical bodies and double openings are characteristic features of
Correct Option:
A
The described features correspond to a specific phylum of animals:
- Bilateral symmetry: Body can be divided into two mirror-image halves.
- Cylindrical bodies: Tube-shaped or worm-like.
- Double openings: Complete digestive system with mouth and anus.
These features are most characteristic of nematodes (roundworms).
- Nematodes: Have bilateral symmetry, cylindrical bodies, and a complete digestive system.
- Hydra: Exhibit radial symmetry.
- Protozoa & Protists: Single-celled and lack these characteristics.