Select the taxonomy mentioned that represents both marine and fresh water species.
Correct answer: D. Cnidaria
- A. Echinoderms
- B. Ctenophora
- C. Cephalochordata
- D. Cnidaria
Explanation
Cnidarians are the sac-like animals which are aquatic. They are mostly marine except a few like hydra which are fresh water. They are the simplest organisms that have attained a tissue level of organization. Members of Ctenophora, Cephalochordata and Echinodermata are exclusively marine.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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