A genus of small, freshwater cnidarians (coelenterates) which belong to the class Hydrozoa. Hydra is an exceptional member of this class because it is a mobile individual polyp rather than a sessile or colonial form, and uses its cnidoblasts to capture prey. Unlike most Hydrozoa, which spend at least part of their lives in a medusa form, which reproduces sexually, Hydra exists only as polyps. They are typically a few millimeters long.
These are stinging cells found in cnidarian and coelenterate. Each of them bears a stinging cell organelle called nematocyst which is used in offence, defence and attachment of animal.
Hydra may reproduce asexually
Hydra may reproduce asexually
Hydra or Hydra
Hydra is an animal. Animals never have chloroplasts
In hydra -_-
no,hydra have no organ
hydra
A hydra does not have cephalization.
No a hydra is not a fish. A fish is a vertebrate. A hydra is much more primitive.
No a hydra is not a fish. A fish is a vertebrate. A hydra is much more primitive.
Lernaean Hydra.
Hydra is a eukaryote