ADVERTISEMENTS:
In this article we will discuss about the structure of hydra. This will also help you to draw the structure and diagram of hydra.
1. It is a fresh water form cosmopolitan in distribution.
ADVERTISEMENTS:
2. It is found attached to aquatic weeds.
3. Body differentiated into a long tubular trunk and a hypostome or mouth surrounded by a ring of long tentacles.
4. Through the body runs a cavity- the coelenteron which also extends into tentacles.
5. Body-wall diploblastic and is made up of outer ectoderm and inner endoderm and a gelatinous mesogloea in between the two layers.
ADVERTISEMENTS:
6. The outermost covering of ectoderm is in the form of transparent cuticle.
7. The specialised organs of offence and defence -the nematocysts are present.
8. Along the body, ‘at places’, are found small buds, which are future young ones.
9. Reproduces asexually as well as sexually.
