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The most ancient group of animals, they live underwater, lack real tissues and body symmetry.



sūklis, parazoāns, apkakles šūnu, poru šūnu, sklerocīts, kuņģa dobums, poru, migrācijas šūnas, filtru barošanas dzīvesveids, kaļķakmens sūklis, keramiskā sūklis, Demosponge, dzīvnieks, Bioloģija

Saistītie vienumi


Jellyfish are free-swimming marine animals, a species of Cnidaria, the most ancient group of Eumetazoans.


An extinct group of Cephalopoda, with solid external skeletons. They are excellent index fossils.

Common earthworm

The anatomy of annelids is demonstrated through the example of the common earthworm.

European garden spider

This animation demonstrates the anatomy of spiders through the example of a common European species.

Large white butterfly

The large white butterfly is a common species of butterflies, through which we demonstrate the anatomy of butterflies.

Long-tailed mayfly

Larvae of this type of mayflies spend the first three years of their lives in water, their adult lives last for only one day which they use for mating.


Tardigrades can survive in extreme environments, they can even stay alive in outer space.


The ancestors of Arachnida and Crustacea belonged to the class Trilobita.

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