Question on: JAMB Biology - 2024
Bilateral symmetry, cylindrical bodies and double openings are characteristic features of
A
Nematodes
B
Hydra
C
Protozoa
D
Protists
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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.
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