A) Velella
B) Physalia
C) Obelia
D) Porpita
Correct Answer: B
Solution :
Physalia is tetramorphic in nature, it consists of (i) a small dactylozooid with a long siender tantacle. (ii) a gastrozooid with mouth but no tentacle. (iii) a branched gonozooid, which bears both male and female gonophores. (iv) a large dactylozooid with an enormous nematocyst bearing fishing tentacle.
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