Freshwater pearl mussel

Freshwater pearl mussel

A species of mollusc widespread in freshwaters.

Biologija

Raktiniai žodžiai

Midijos, Hingeline ir raištis, Sincline, sifonas, Žiauną, Mantija, Augimo linijos, eksoskeletas, perlamutras, perlinės midijos, gyvūnas, Mollusca, Planktono valgymas, saprofagas, biologija

Susiję elementai

Ammonites

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.

Edible frog

This animation demonstrates the anatomy of amphibians through the example of a common species of frogs.

Freshwater fishes

Many freshwater fishes are also popular as food.

Jellyfish

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

Mallard

This animation demonstrates the anatomy of birds through the example of mallards.

Pearls

Pearls, often used as gemstones, are the by-products of certain molluscs' protective mechanisms.

Plačiažnyplis vėžys

Didelių gėlavandenių vėžių rūšis, kuri plačiai paplitusi Europoje.

Planaria gonocephala

One of the most common types of flatworms.

Reed and bulrush

Cosmopolitan monocots inhabiting watersides.

Spider silk, spider web

While the density of spider silk is less than that of nylon filaments, its tensile strength is greater than that of steel.

Sponge

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

Upių šliuzų eksploatavimas

Dėl upių šliuzų, upėse su dideliais lygio skirtumais, yra žymiai saugiau plaukioti.

Vynuoginė sraigė

Plačiai paplitusi sraigių rūšis, dar naudojama maistui.

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