Question

Explain the results and reasons of When Hydra is transversely sliced into annular segments.

Answer 1

If HYDRA is transversely sliced into annular segments then each segment gives rise to new hypostome anteriorly and the basal part posteriorly. 

Answer 2

Hydra when transversely sliced into annular segments, each segment grows into an individual Hydra by the process of regeneration.  

Each of the segment gives rise to a hypostome distally (anteriorly) and a basal part proximally (posteriorly). Regeneration begins with closure of the wound. The damaged surface is then covered by ectoderm which forms a sheet of epithelial cells.  

Large numbers of cells are produced from the growth zone towards the cut surface. Each piece then regenerates to form a complete miniature hydra.