arthropod trivia marine biology. cephalized animals have a distinct “head” containing many sense...
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Arthropod Trivia
Marine Biology
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• Cephalized animals have a distinct “head” containing many sense structures.
• A. true• B. false
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Arthropods don’t get much larger than this because
A. Humans catch and eat them before they have a chance to get larger.
B. There isn’t enough food for a large animal to eat
C. Their exoskeleton would be too heavy for the animal to move easily
D. There isn’t enough space in the ocean floor because there are so many arthropods underwater
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• Which animal belongs in Class Meristomata?
• A. crayfish• B. horseshoe crab• C. spider crab
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• This animal is molting. It’s exoskeleton is made of …
• A. cellulose• B. chitin• C. bone
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What kind of symmetry does a crayfish have?
• A. bilateral• B. radial• C. none aka asymmetry
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If you want to know the gender of this crayfish, you need to look at the
a. Chelipedsb.Uropodsc. Swimmeretsd.carapace
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• Small crustaceans, such as krill, are considered to be…
• A. herbivores• B. carnivores• C. scavengers• D. filter feeders
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• What type of animal below is most closely related to a spider?
• A. lobster• B. green crab• C. horseshoe crab• D. hermit crab
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• What extra material do some marine arthropods take from the ocean in order to make their skeleton even harder?
• A. silica (= sand)• B. limestone• C . Calcium
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• Arthropods use
• A. external fertilization before molting• B. external fertilization after molting• C. internal fertilization before molting• D. internal fertilization after molting
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• What is the gender of the Blue Crab in the picture below?
• A. male• B. female
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• What type of circulatory system do arthropods have?
• A. open• B. closed• C. none, they use diffusion
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• 12. Shrimp and lobsters usually are considered
• A. filter feeders• B. carnivores• C. herbivores• D. scavengers
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This animal’s body is divided into ____ sections.
A.2B.3C.7D.8
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• What structures do horseshoe crabs have for respiration?
• A. diffusion• B. gills• C. book gills• D. lungs
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• 24. Which appendages on arthropods are used for pushing food into the animal’s mouth?
• A. walking legs• B. swimmerets• C. maxillipeds• D. chelipeds
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This crab is structurally different from a lobster in that
a. It is a decapod and a lobster is an octopod
b. It has jointed walking legs and lobsters do not
c. It’s body Is lacking the section called the abdomen, while the lobster clearly has an abdomen section
d. It’s abdomen is small and folded up under it’s cephalothorax, while the lobster’s abdomen is large and muscular
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• Which of the following is NOT a true crab?
• A. blue crab• B. asian shore crab• C. hermit crab• D. portly spider crab
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The structure marked with a blue arrow is
A. A modified legB. A chelipedC. An antennaeD. The telsonE. Both A and B
are correct
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• What type of reproduction do arthropods use?
• A. sexual• B. asexual• C. both sexual and asexual
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• 26. These animals belong in Phylum_____
• A. Chordata • B. Molluska• C. Arthropoda
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• Which appendages on a crayfish are used for moving?
• A. maxillipeds• B. swimmerets• C. antennules• D. mandibles
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The part of the crayfish marked with the blue arrow is the
a. Chelipedb.Abdomenc. Telsond.rostrum
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• Lobsters, crabs, and crayfish belong in ORDER ________________.
• A. arthropoda • B. mandibulata• C. crustacea• D. decapoda