Hydra are organism belonging to the phylum cnidaria. It do not has exoskeleton but soft cylindrical body. Its body wall contains two layers of cell, ectoderm and endoterm. It hax tentacles and a gut cavity with a single opening call a mouth.
Just about ALL human (and living organism) characteristics are affected by genes.
How to differences in characteristics affect jackrabbits in survival
Characteristics describe the observable features of an organism, while traits are specific versions of these characteristics. Traits are inherited through genetic information and contribute to the overall characteristics of an individual. In essence, traits are the variations within characteristics that help distinguish different individuals within a species.
their characteristics
Derived characteristics are typically more diagnostic and informative for understanding the evolutionary relationships among organisms because they reflect recent changes and adaptations. Ancestral characteristics may be shared among distantly related species and therefore can be less useful for determining evolutionary relationships. Derived characteristics provide a clearer picture of how species are related and have evolved from a common ancestor.
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jellyfish
Hydrozoa
Hydra belongs to the phylum Cnidaria and the class Hydrozoa.
Cnidaria.
hydrozoa
Hydra , Obelia e.t.c. belong to Class Hydrozoa because the Characteristics of the animal that has a life cycle that includes a polyp and a medusa , gametes ectodermal . They also belong to the Phylum Cnidaria witch means that they have stinging cells .
There are over 200 species of Scyphozoa, about 50 species of Staurozoa, about 20 species of Cubozoa, and in Hydrozoa there are about 1000-1500 species that produce medusae (and many more hydrozoa species that do not).
The hydrozoa refers to the taxonomic class of predatory animals and colonial animals that live in salt water. The members of hydozoa are related to corals and jellyfish.
Bernhard Werner has written: 'Effect of some environmental factors on differentiation and determination in marine hydrozoa' -- subject(s): Hydrozoa
hydrozoa
one idea