The cuticle of arthropods is composed of a thicker inner ________ layer, and a thinner outer layer. the ________. The macromolecule that characterizes the cuticle is
procuticle, epicuticle, chitin.
The nonliving exoskeleton inhibits growth. To cope with this situation, arthropods use a process to shed the old exoskeleton called
The ________ have been extinct for 250 million years but they show the basic pattern that started the arthropods.
The characteristics of four pairs of walking legs, a pair of pedipalps, and no mandible or antennae are found in which of the following?
Which of the following can be recognized by these characteristics: unsegmented carapace, spinelike telson, book gills, and marine habitat
The following group that has four pairs of thin walking legs, eats by sucking juices from hydroids, and is particularly common in polar oceans is
Which one of the following is called the giant water scorpion and is known from 200-million-year-old fossils?
Members of the class Arachnida can be differentiated from other arthropods by possession of a
Cephalothorax and Abdomen
Which of the following orders contains members who have a cephalothorax and abdomen with no external segmentation, and these tagmata are joined by a narrow pedicel?
Which of the following orders is characterized by having an abdomen divided into a preabdomen and a tail-like postabdomen?
Which of the following orders differs from the others by having their cephalothorax and abdomen completely fused?
Ticks are interesting to epidemiologists because they are second only to mosquitoes as ________ for serious diseases.
The following are characteristics of the black widow spider:
small, shiny black, with a red hourglass on the ventral abdomen
The last pair of crustacean appendages that provide swift backward motion and help protect developing young in crustaceans such as crayfish are called
Excretory organs and osmoregulatory pores in the crustaceans are located at the base of the ______.
The crustaceans have two types of eyes; they are the ________ and the ________ eyes.
While the term "blueblood" is sometimes used in literature to reference English nobility, some crustaceans actually have blue blood because their respiratory pigment is
A compound eye is made of many small units that have individual lens and nerves. These structures are called
Which of the following classes can be recognized by having flattened, leaflike appendages used for respiration?
Of the maxillopods in the following list, members of the subclass ________ are typically parasitic.
The subphylum Hexapoda is characterized by having three pairs of legs and includes the ________ and the _____.
Which of the following classes is characterized by having one pair of appendages per somite except for the first one and the last two somites?
Which of the following classes is characterized by having two pairs of appendages per abdominal somite?
Mouthparts of an insect typically contain four parts. These four parts are the
labrum, mandibles, maxillae, and labium.
Insects undergo metamorphosis in order to grow and exploit different habitats. The individual stages in this process are called
Most insects go through a complete change of body form from larva to pupa to adult; this is called ________ metamorphosis.
In addition to visual and auditory communication, insects use pheromones, which are a form of _____ communication.
If you wanted to control an insect infestation in your fruit orchard, and wanted to employ something other than pesticides, you might release a
Which of the following are not respiratory mechanisms seen in insects, in either juvenile forms or adults?
If an insect has an egg, nymphal stages, and finally an adult stages, it exhibits ________ metamorphosis.
The arthropods have a metameric body with segments organized into functional groups called _____.
A cuticle is different from a tegument in that a cuticle is _______, while a tegument is
Members of subclass Pentastomida are considered to be _________ feeders and are found in
parasitic, vertebrate tissues
Of the groups studied in this chapter, the pentastomids are the only group that lacks a mouth and digestive system.