CLASS 6 · LEARNING KNOWLEDGE
Invertebrate animals – basic principles
How it works
Invertebrate animals are animals without a backbone. They include numerous groups such as insects, arachnids, molluscs, crustaceans and worms. They make up the largest part of the animal species on Earth and occur in almost all habitats. Invertebrates often have other support structures, such as exoskeletons (e.g. in insects) or hydrostatic skeletons (e.g. in earthworms). They differ markedly from vertebrates in body structure, movement and way of life.
Note
Invertebrate animals are recognized by the fact that they do not have a backbone. They are divided into different groups according to body structure, support system and way of life.
Invertebrate animals are recognized by the fact that they do not have a backbone. They are divided into different groups according to body structure, support system and way of life.
An example
Which of the following animals is an invertebrate?
The snail is an invertebrate because it does not have a backbone, but is a mollusc. The frog has a backbone and is therefore a vertebrate.
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Biology. The topic assignment may vary by federal state.