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Zoology

Mollusca, Arthropoda, Echinoderm Test

QuestionAnswer
Define cephalopoda Cephalo means head and poda means footed
what is the name of the tube-like structure which water enters and leaves a mollusk's body? siphon
Which mollusk is the most active? cephalopods
Which cephalopods have external shells? nautiluses
What is the largest class of mollusks? gastropods
What are the general characteristics of the phylum mollusca? bilateral, 3 tissue layers and a coelom
What are the classes of Mollusks and give an example of each? cephalopoda, octopus bivalvia, clam gastropoda, abalones, snails
What is a coelom? What are the tissue that line this cavity? A fluid-filled body cavity; mesoderm
What are tentacles? a divided foot in mollusks
What is the function of excurrent siphon? Incurrent siphon? Excurrent, remove wastes and carbon dioxide incurrent, bring in oxygen and food
How do most aquatic mollusks breathe? gills, diffusion
How are crustaceans different from other arthropods? two pairs of antennae
What are some animal examples of class arachnida? ticks, mites and scorpions
What is the largest class of arthropods? Class Insecta
What are jointed appendages and what do they allow? allow powerful movements and greater flexibility
A grasshopper excretes metabolic wastes through this structure? malpighian tubules
What are the common characteristics of arthropods? bilateral, jointed appendages, exoskeleton
What is the polysaccharide that makes up the exoskeleton of arthropods? chitin
Name the classes of arthropods and how do scientists categorize them? Arachnida, 8 legs Merostomata, 8 legs, carapace Diplopoda, 2 pairs of legs per segment chilopoda, 1 pair of legs per segment Insecta: 6 legs Crustacea: 10 pairs of legs, one pair of claws
What are the common characteristics between arachnida and merostomata? 2 main body regions, book lungs/book gills and chewing mouthparts
How are spiders different from insects? 8 legs vs. 6 legs,chelicera in spiders, 2 body regions vs 3 body regions.
What are the structures in echinoderms responsible for respiration and movement? tube feet
What is the skeleton of the echinoderm made of? endoskeleton made of calcium carbonate
What are the body functions of the water vascular system? respiration, circulation, movement
What animals belong to the phylum echinodermata? sand dollars, bristle stars, sea urchins
How many species of echinoderms exist today? 7,000
What are the five classes and give an examples of each? Crinoidea, sea lily, feather stars Ophiuroidea, basket stars, brittle stars Echinoidea, sea urchins, sand dollars holothuroidea, sea cucumber asteroidea, sea stars
What is the name of the echinoderm that lives on hard surfaces and they can sometimes contain venom? sea urchin
What is the system that carries oxygen throughout the body of an echinoderm? water vascular system
Created by: jlafferty
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