Head, Thorax, And Abdomen
Head, Thorax, And Abdomen
Fused segments in an arthropd are called tagmate and phenomenon is called tagmatization . Cephalothorax , Prosoa , meta soma etc. are tagmata .
The Arachnid class of arthropods under subphylum Chelicerata have only two major body sections (tagmata) called the cephalothorax and abdomen; they also usually have eight legs as adults, and no wings nor antennae.
They express the characteristics inherent to arthropods. All insects are arthropods. Not all arthropods are insects.
They express the characteristics inherent to arthropods. All insects are arthropods. Not all arthropods are insects.
arthropods
They are called arthropods( that means jointed legs )
In taxonomy, arthropods would not be an order but a much larger grouping called a phylum (phylum Arthropoda). Taxa are hierarchical, with the smaller divisions below phyla being subphyla, and within them, the classes/subclasses, then below that, the Orders. You might say that phylum Arthropoda has a lot of orders "inside it."
exoskeleton
Divisions of an era are called Periods.
The arthropods fall into a categorization (taxon) called a phylum (in taxonomic nomenclature there is an entity called a 'class' which is below the phyla). Arthropods have segmented bodies, an exoskeleton made from chitin, and joint appendages.
Pretty much all bugs are arthropods, with the exception of an informal usage of the word "bug" to describe a pathogen causing an illness. All insects are arthropods; non-insect arthropods like myriapods (centipedes and millipedes for example) are called bugs and are still arthropods. Arachnids including spiders and scorpions, which might be called bugs, are also arthropods; land crabs which might be referred to as "bugs" are arthropods. In biology there is a group of insects called the "true bugs", including the shield bugs; also arthropods.