Question

Structure histology and life cycle of obelia

Answer 1

Obelia is found in the colonies with support and horizontal branches as Hydrocephalus.

The fertilization occurs in the sea water where the germ cells are set free and the female medusae fertile the one that formed zygote going of cleavage.

Then it converts to oval and ciliated planula larva that settles down on the submerges substratum by one end.

Then the disc appears and expands by developing manubrium and tentacles. The hydraulic sends the buds by the repetition process.