A) In hydrula stage and indefinite in number
B) Bases of tentacles of medusa and 8 in number
C) On blastostyles and 8 in number
D) On radial canals, oral surface of medusa and four in number
Correct Answer: D
Solution :
A sexually mature medusa of obelia bears four groups of gonads situated on the middle of four radial canal.You need to login to perform this action.
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