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.
As juveniles. As adults, hydra become sessile and fasten to rocks. "Nekton" are creatures that swim, like fish.
Hydra , jelly fish , coral .
jelly fish,hydra and sea anemones
The hydra has radial symmetry. The hydra belongs to the phylum Cnidaria and many immobile species in this phylum exhibit radial symmetry. Some marine animals that have bilateral symmetry are fish, sea turtles, and marine mammals.
Hydra or Hydra
All animals respire, but some simple animals, such as cnidarians (anemones, jellyfish, and relatives), and sponges don't have blood.
Hydra is an animal. Animals never have chloroplasts
In hydra -_-
no,hydra have no organ
A hydra does not have cephalization.
hydra