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Hello everyone, we are Marta, Lorenzo, and Susana, and we are going to talk about Nidariums and Polycaps.

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Nidariums. Nidariums are two groups of Nidariums. Jellyfish and Polyps.

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Nidarians have a radial symmetry. They have similar parts around the central axis.

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Nidarians always travel in aquatic places.

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Poriferans. Poriferans have a radial or asymmetrical symmetry.

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Asymmetrical symmetry means that the two sides are ventricles.

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Polyphera are attached to deeper systems.

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Polyphera do not have digestive system while lidarians do.

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Polyphera have respiratory system while lidarians do not.

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Both of them do not have nervous system.

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Corybaras and Cnidarians do not have endocrine system.

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Corybaras and Cnidarians don't have endocrine system.

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And both of them have a reproductive system.

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Cnidarians have a very simple nervous system, which is composed only of nerve.

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Cnidarians have a digestive system.

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Nidarians have a digestive cavity that communicates with the outside through a hole that serves as mouth and anus.

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Nidarians reproduce lactate today.

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Nidarians are an alternative generation. This means they go from polyps to yellowfish during their life cycles.

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Polyps reproduce asexually and deliver sexual.

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A very famous periphery is the spondylochrome, a very famous periphery is the spondylochrome,

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The sources that we have used today is the biology book and two books.

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We hope you have learned and that you like how we invertebrate animals.

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Thanks for watching.