Tube feet are the characteristic structures of:
Correct answer: A. starfish
- A. starfish
- B. Jellyfish
- C. Crayfish
- D. Cuttlefish
Explanation
Starfish belongs to the phylum echinodermata who have developed tube feet for locomotion. The tube feet generally protrude out through special radial areas called ambulacra. They are extended and retracted by variations in hydraulic pressure of fluid in them and by contractions of their muscles. Cuttle fish belongs to the Phylum Mollusca and it swims. Crayfish belongs to the Phylum Arthropoda in which locomotion occurs by jointed appendages. Jelly fish belongs to the Phylum Cnidaria and it swims.
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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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