No, that is not true. Arthropods include insects, arachnids, crustaceans, and Myriapoda. Insects always do have six legs. Arachnids, like Spiders and scorpions, have eight. Myriapods, which are millipedes and centipedes, have many legs, ranging from over a dozen to over a hundred, depending on the type.
Centipedes are neither reptiles nor insects (insects have 6 legs).They are arthropods, as are millipedes and arachnids (spiders, scorpions).Arthropods are often grouped with insects under the inaccurate label "bugs" but are not true bugs.
By biological definition, an 'insect' has only six legs. Some insect larva seem to have more, however these are not 'true' legs, these are stumps known as prolegs. Unless you mean a species like woodlice (which are not insects) then you could be referring to insect larva like caterpillars.
true
They don't have jointed legs or an exoskeleton. Arthropods are all armoured, leggy animals, such as centi/millipedes, crustaceans, arachnids and insects. Nothing wormy there, save for their larvae. The clam worm does seem to have legs, but those are actually tufts of hair-like appendages, not true jointed arthropod legs.
Some do, but most don't. The number of legs can range from 20 to more than 100.
It is always true.
Arthropods are characterized by segmented bodies, an exoskeleton made from chitin, and joint appendages.
true true
It is always divisible by two.
FALSE
true
True