Which one of the following is not a characteristic of Phylum Annelida?
- Pseudocoelom
- Ventral nerve cord
- Closed circulatory system
- Segmentation
Answer
(1) Pseudocoelom
Solution
As per NCERT, annelids are coelomate animals; their body surface is distinctly marked out into segments or metameres, they possess a closed circulatory system, and the neural system consists of paired ganglia connected by lateral nerves to a double ventral nerve cord.
∵ Annelids have a true coelom,
∴ pseudocoelom is not a characteristic of Annelida (it is seen in Aschelminthes).
Answer: (1)