Spiders (order Araneae) are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude ...

Arachnids are arthropods in the class Arachnida of the subphylum Chelicerata. Arachnida includes, among others, spiders, scorpions, ticks, mites, ...

Spiders are invertebrates but are not considered insects because they only have two main body parts instead of three, eight legs instead of six and no antennae ...

Spider, any of more than 46700 species of arachnids that differ from insects in having eight legs rather than six and in having the body divided into two ...

11 мая 2019 г. · Spiders are arachnids, the largest class in the order Arthropoda. Arthropods are invertebrate animals with an exoskeleton (a stiff ... Why are spiders not considered insects whereas both of them ... Is a spider a vertebrate or an invertebrate? Why are they ... Why is a spider considered a vertebrate? - Quora Why does the spider belong to the class of arachnida and not ... Другие результаты с сайта www.quora.com

Spiders are arthropods, so their skeletal system of their body is the outermost layer. The hard exoskeleton helps the spider maintain moisture and not dry out.

The arachnids (class Arachnida) are an arthropod group that includes spiders, daddy longlegs, scorpions, mites, and ticks as well as lesser-known subgroups.

There are three main groups that may be very familiar to you: insects, arachnids and crustaceans. INSECTS. Insects are the largest group of invertebrates and ...