Classification of Animals
Question
How many of the following are the characters of Obelia?
(i) Radial symmetrical
(ii) Diploblastic
(iii) The cellular level of organisation
(iv) Digestion is intracellular only
(v) Exhibit two basic body forms called polyp and medusa.
Moderate
Solution
Obelia is a Cnidarian.
Exhibits tissue level of organisation (not cellular) and radial symmetry.
Digestion is both intra and extracellular.
It also exhibits metagenesis (polyp produces medusa asexually and medulla forms polyp sexually).
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