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Types of invertebrates

Characteristics of invertebrates

Invertebrates

Sponges

Structure of sponges

Sponges

Internal structure of the sponges

Structure of cnidarians

Cnidarians

Characteristics of sponges and coelenterates

Structure of Dendrocoelum lacteum

Characteristic organ systems of platyhelminths

Soil nematode

Structure of Ascaris – a typical nematode

Similarities and differences between platyhelminths and nematodes

Parasitic nematodes

Structure of a rotifer

Rotifers

Characteristic features of rotifers

Structure of the earthworm's nervous system

Structure of an earthworm – a typical annelid

Organs of the earthworm

Locomotion in annelids

Structure of the Roman snail – a typical gastropod

Molluscs

Gastropods

Bivalves

Cephalopods

Structure of arthropods

Characteristic features of arthropods

Crustaceans

Insects

Arachnids

Structure of a starfish – a typical echinoderm

Echinoderms

Structure of echinoderms

Characteristic feature of echinoderms

Echinoderms