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Question

Write the names of the phyla of the following organisms and mention one characteristics of each - 

1. Dog Fish 
2. Jelly Fish 
3. Starfish 


Solution

1) dogfish
Characteristics of life of phylum chordata, classChondrichthyes… genussqualus species acanthias•
Cells:Multicellular
•Organization: Bilateral symmetry
•Require energy: predators, mainly boneyfish… also canibalistic
•Responds: Complex nervous system,digestive system,

2)Phylum Of Jelly Fish -

Jelly fish belongs to phylum Cnidaria of Kindom Animalia ( also known as metazoa). Some sources may say that it belongs to phylum Coelenterata, but actually Coelenterata is a term encompassing two animal phyla,

General Characters of Phylum Cnidaria
These are mostly marine and a few like hydra live in fresh water.
Many are colonial (Eg: Corals). ...
They are diploblastic and show tissue grade of organization.
The body is radially symmetric but sea anemones show biradial symmetry.

3)Starfish is not a term in use any more because they are not fish. They are called “sea stars.” They are echinoderms of the phylum Echinodermata.


General characteristics of Phylum Echinodermata
(Echinos: Spines; derma: Skin)
Kingdom: Animalia.
Habitat: These are exclusively marine.
Grade of organization: organ system grade.
Germ layer: triploblastic.
Symmetry: Adults are radially symmetrical while the larvae are bilaterally symmetrical.
Coelom: present ( coelomate)

Biology

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