Select the taxon mentioned that represents both marine and fresh water species.
- Echinoderms
- Ctenophora
- Cephalochordata
- Cnidaria
Answer
(4) Cnidaria
Solution
As per NCERT, cnidarians are aquatic, mostly marine; Hydra is a fresh water cnidarian.
∵ Echinoderms, ctenophores and cephalochordates are exclusively marine.
∴ Cnidaria represents both marine and fresh water species.
Answer: (4)