AP PSYCHOLOGY

Detailed explanation-1: -Spiders are arachnids, a class of arthropods that also includes scorpions, mites, and ticks.

Detailed explanation-2: -The three main clades into which spiders are divided are shown in bold; as of 2015, they are usually treated as one suborder, Mesothelae, and two infraorders, Mygalomorphae and Araneomorphae, grouped into the suborder Opisthothelae.

Detailed explanation-3: -All spiders have eight legs. Some species use their front legs to mimic antennae but no known species actually has antennae. The eight-legged creatures are invertebrates, so they don’t have a backbone. The animals have no parts in their mouth for chewing.

Detailed explanation-4: -The correct answer is Spider. Insects are the only invertebrates (animals without backbones) with wings. We can easily see that Houseflies, bed-bug, and mosquitoes have wings but spiders do not have wings. Hence, the spider is not an insect.