Although spiders are classified as both arthropods and arachnids, neither of those is the family name. Arthropoda is the phylum to which spiders belong, while arachnid is the class. No one family exists to which all spiders belong.
At least 112 spider families in the order Araneae (true spiders) have been identified. The arrangement of a spider's eyes is one characteristic that determines its family. Arachnids have a two-part body, eight legs and no antennae. Other creatures in this class are scorpions, mites and ticks. Arthropods are invertebrates with a segmented body and jointed legs. This phylum includes insects and arachnids.Learn More
Copper is classified as a metal on the periodic table and is therefore not classified according to "family" in the manner that plants and animals are. Copper is red-colored. It is malleable, ductile, and a good conductor of heat and electricity.Full Answer >
By eating the bugs that can destroy crops, spiders serve an important function in many ecosystems. Spiders are also prey for other animals, further adding to their ecological importance, and spider silk is potentially useful to humans as a material.Full Answer >
Arthropods excrete waste through special structures known as Malpighian tubules, which are extensions of the digestive tract. Terrestrial arthropods excrete their waste as solid uric acid, just as birds do, which requires no water and thus preserves precious moisture.Full Answer >
Spiders mainly eat insects and drink water. Really big spiders may feast on small critters, like mice and birds.Full Answer >