Which class of Cnidarian is described below: This class includes the corals and the sea anemones.  Individual animals are cylindrical in shape and are attached directly to a substrate in the polyp body form.   Question 18 options:   a)  Class Hydrozoa   b)  Class Scyphozoa   c)  Class Cubozoa   d)  Class Anthozoa

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Q: Vertical Tubes Class: Anthozoa Genus: Tubipora Common Name: Organ Pipe Coral Basal Plate Class:…

A: Introduction The largest coral system is the Great Barrier Reef has rich biodiversity including all…

Q: Would corals be able to live without zooxanthellae?

A: Corals are marine invertebrates belonging to the Anthozoa class of the phylum Cnidaria. They usually…

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A: The phylum Placozoa is a basal form of free-living multicellular organism. It consists of a small…

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A: Stalked Jellyfishes are the sole living members of Class Staurozoa.

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A: Placozoans are free living marine multicellular organism with simplest structure.

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A: Both class belong to the phylum mollusca of kingdom animalia.

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Q: Discuss briefly the phylogenetic position of placozoa

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Q: Explain bryozoans?

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Q: In what way is a hydra atypical as a hydrozoan?

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A:

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Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.