Do Spiders Belong to Subphylum Arachnida?
WouterSpiders are members of the class Arachnida. This phylum contains a diverse group of arthropods, including insects, mites, crustaceans, and ticks.
Most arachnids are terrestrial predators, but some are aquatic. Some species of arachnids have tracheae, which are organs derived from the gills of the animal.
These tracheae provide air to the spider. Some spiders have book lungs, which are special organs located on the abdomen. This allows the spider to breathe by transferring oxygen from the air into the blood.
Arachnids are also distinguished from other arachnids by the presence of a modified pair of fangs. Some have poison glands located on the base of the jaws. These glands can be used for injecting poison. Other arachnids use saliva to digest prey.
Arachnids can be found all over the world. They range in size from tiny to huge. Some are solitary, while others are social. They are mostly carnivorous, but some eat plants as well. Arachnids are important for humans, as they control insect populations. In fact, scientists describe over 100,000 species of arachnids.
Arachnids are generally classified into orders. The most common groups are the arachnids. They include the scorpions, mites, and ticks. Arachnids are most closely related to horseshoe crabs. The arachnids have two body segments, whereas the insects have three. In addition, most arachnids have an exoskeleton, while the insects have none.
Some arachnids have chelicerae, which are modified pincers. Some species of spiders use chelicerae to ingest their prey.
