Chapter 23 Arthropod Review

The subphylum of modern arthropods that the spider belongs to (a) Trilobita (b) Chelicerata (c) Crustacea (d) Uniramia

B Chelicerate

The major respiratory organs of crayfish are (a) lungs (b) gills (c) tracheae (d) book lungs

B gills

Appendages in the spider that inject poison and suck fluids out of the prey (a) chelicerae (b) spinnerets (c) pedipalps (d) mandibles

A) Chelicerae

The appendages on the abdomen of the crayfish are called the (a) Maxillipeds (b) chelipeds (c) walking legs (d) swimmerets

D Swimmerets

All arthropods have (a) a cephalothorax (b) spiracles (c) jointed appendages (d) antennae

C) Jointed appendages

The queen bee secretes a pheromone that prevents the drones from feeding ____ to the larvae (a) honey (b) testosterone (c) peanut butter (d) royal jelly

D royal jelly

One difference between centipedes and millipedes is that millipedes (a) are herbivores (b) are carnivores (c) have fanglike claws (d) are not segmented

A are herbivores

When a butterfly larva reaches a certain size, it forms a protective case around itself. At this stage, the butterfly is called a (a) caterpillar (b) pupa (c) cocoon (d) nymph

B Pupa

What enables male moths to locate female moths at great distances? (a) Spiracles (b) good eyesight (c) pheromones (d) love

C Pheromones

An adaptation that causes insects to resemble plants or other animals is called (a) camouflage (b) metamorphosis (c) mimicry (d) coevolution

C Mimicry

In arachnids, the excretory organs that filter wastes from body fluids are called (a) kidneys (b) malpighian tubules (c) trachaea (d) green glands

B Malpighian Tubules

All crustaceans have a pair of jaw-like appendages called (a) pedipalps (b) fangs (c) swimmerets (d) mandibles

D Mandibles

Mouthparts used for chewing

Mandibles

Process of shedding an old exoskeleton

Molting

Hard external covering that provides protection and support

Exoskeleton

Slender projections that contain sensory receptors

Antennae

Branched tubes that take in oxygen in insects

Trachea

Removes wastes from the blood of crayfish

Green Gland

The major respiratory organs of spiders

Book Lungs

Tiny holes on the abdomen of grasshoppers that take in air

Spiracles

One of the only organisms in this chapter with one body region

Mites

The exoskeleton of arthropods is made of this substance

Chitin

Final Question

Name three major external characteristics common to all arthropods.

Segmented Body Jointed Appendages Exoskeleton

Name four organisms that belong to the crustacean classification?

Lobster Crab Crawfish Shrimp

Describe two advantages and two disadvantages to having an exoskeleton

Adv—Offers protection and support, also allows for movement since Muscles attach directly to the exoskeleton Dis—Limits the size of the organism and also leaves them unprotected when they are molting in order to grow.

What behavior of spiders and scorpions makes mating dangerous for the male?.

After mating is complete, some spiders and scorpions will kill and the male and then eat them.

Give three examples how the mouthparts of insects have been adapted to their environments and how the insect feeds. Mandibles—are like jaws are used cutting and chewing its food, since most insects eat plants, they need to be able to tear pieces off. Maxillae—Little appendages on the mouth that hold food so the insect can eat have evolved since insects jointed legs would be unable to hold or bring food to the mouth of the insect. Maxillaepeds—Similar to the maxillae, they have adapted so the insect can detect if a material is food or not, helping them determine if they should eat.

Additional information needed to know for test Terms—Uniramia, appendage, social insects, telson, and compound eyes. Know the differences between grasshopper, spider and crawfish Know advantages and disadvantages of introducing a new insect into an environment to remove unwanted pest.