Distinguish between phyla Cnidaria and Ctenophora. Outline five characteristics of nematodes.
Understand the Problem
The question is asking to distinguish between the phyla Cnidaria and Ctenophora, as well as to outline five characteristics of nematodes, which involves comparing and defining specific biological groups.
Answer
Cnidaria have radial symmetry and nematocysts; Ctenophora have biradial symmetry and lack nematocysts. Nematodes: unsegmented, complete digestive system, cuticle, pseudocoelomates, eutely.
The final answer is: Cnidaria have radial symmetry, nematocysts, and a polyp/medusa lifecycle. Ctenophora have biradial symmetry, lack nematocysts, and have a complete digestive tract. Nematodes are unsegmented, have a complete digestive system, are covered in a cuticle, are pseudocoelomates, and exhibit eutely.
Answer for screen readers
The final answer is: Cnidaria have radial symmetry, nematocysts, and a polyp/medusa lifecycle. Ctenophora have biradial symmetry, lack nematocysts, and have a complete digestive tract. Nematodes are unsegmented, have a complete digestive system, are covered in a cuticle, are pseudocoelomates, and exhibit eutely.
More Information
Cnidarians include jellyfish and corals, while Ctenophores are known as comb jellies. Both are marine organisms, but have distinct body plans and mechanisms for capturing food.
Tips
Common mistakes include confusing Ctenophora’s lack of a polyp stage with Cnidaria’s life stages. For nematodes, ensure to mention the cuticle layer and pseudocoelomate condition.
Sources
- Difference between Cnidaria and Ctenophora - BYJU'S - byjus.com
- Phylum Cnidaria | manoa.hawaii.edu/ExploringOurFluidEarth - manoa.hawaii.edu
- Cnidaria & Ctenophora | Habitat, Types & Characteristics - Study.com - study.com
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