Chapter 10 Flashcards
What are arthropods with very hard, crusty exoskeletons?
Crustaceans
What is the substance that makes crustacean exoskeletons so hard?
Calcium carbonate
What are the two body regions of crustaceans?
Cephalothorax and abdomen
Which crustacean order includes many of the most familiar edible arthropods?
Decapoda
What is the hard shell of decapods that provides protection for the vital organs called?
Carapace
What is the forward extension of the carapace that protects the decapod’s head?
Rostrum
What are the three pairs of “jaw feet” that are designed to hold food while the decapod chews?
Maxillipeds
What are the structures on the underside of each abdomen segment that are used for swimming and mating?
Swimmerets
What crustaceans are distinguished by having seven pairs of legs?
Amphipods
What copepod has a single simple eye on top of its head?
Cyclops
What is the crustacean group that breathes with gills on the flattened extensions of their legs?
Branchiopods
What are the most numerous animals found in freshwater plankton?
Water fleas
What is the branchiopod that lives in salty water and lacks a carapace?
Brine shrimp
What is the best known cirripede?
Barnacles
What shrimp-like crustacean forms a significant part of marine plankton and are some of the most vital life forms in the ocean?
Krill
What are the only truly terrestrial crustaceans?
Woodlice
What order includes spiders, daddy longlegs, mites, ticks, scorpions, and pseudoscorpions?
Arachnida
What are arachnid’s respiratory structures made up of thin, flat folds of tissue arranged like book pages?
Book lungs
What are the appendages located below the eyes of most arachnids used for seizing and crushing prey?
Chelicerae
What are the appendages that assist the chelicerae in guiding food to the mouth?
Pedipalps
What are the two groups of spiders?
True spiders and Mygalomorphs
What spider has a dark violin-shaped marking on its brown cephalothorax?
Brown recluse
What spider is known for its characteristic red or orange hourglass-shaped marking on the underside of its abdomen?
Black widow
What arachnid is also called a harvestman?
Daddy longlegs
What camouflaged arachnid has no stinger?
Pseudoscorpion
What is a disease commonly transmitted by ticks?
Lyme disease
What skin diseases come from mites?
Scabies and mange
What group of arthropod is in the class Chilopoda?
Centipede
What arthropod has a rounded body with two pairs of jointed appendages per abdominal segment?
Millipede
What is the scientific term for segmented worms?
Annelids
What is the common name for Platyhelminths?
Flatworms
What arthropods are the most abundant animals?
Nematodes (roundworms)
What is the common name for the order that contains clams, oysters, snails, slugs, and octopuses?
Mollusks
What is the group of aquatic mollusks that includes clams, oysters, mussels, and similar species?
Bivalves
What group of mollusk has a name that means “stomach foot”?
Gastropods
What mollusks have the head and foot combined into one structure?
Cephalopods
What group of marine animals includes starfish, sea urchins, sand dollars, and sea cucumbers?
Echinoderms
What is the group of arthropods that include jellyfish, sea anemones,j and corals?
Coelenterates
What are the only multicellular animal without a nervous system?
Sponges
