Write a short note on the characteristic features of Phylum Ctenophora.
Characteristic features of Phylum Ctenophora:
i. They show biradial symmetry and are triploblastic.
ii. They are characterized by the presence of eight rows of cilia that help in locomotion.
iii. Ctenophores possess sticky cells called colloblasts to capture prey.
iv. They lack skeletal, respiratory or excretory system.
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