Exam 33: An Introduction to Invertebrates
Exam 1: Introduction: Evolution and Themes of Biology77 Questions
Exam 2: The Chemical Context of Life98 Questions
Exam 3: Water and Life92 Questions
Exam 4: Carbon and the Molecular Diversity of Life86 Questions
Exam 5: The Structure and Function of Large Biological Molecules131 Questions
Exam 6: A Tour of the Cell111 Questions
Exam 7: Membrane Structure and Function88 Questions
Exam 8: An Introduction to Metabolism92 Questions
Exam 9: Cellular Respiration and Fermentation128 Questions
Exam 10: Photosynthesis103 Questions
Exam 11: Cell Communication85 Questions
Exam 12: The Cell Cycle98 Questions
Exam 13: Meiosis and Sexual Life Cycles90 Questions
Exam 14: Mendel and the Gene Idea92 Questions
Exam 15: The Chromosomal Basis of Inheritance75 Questions
Exam 16: The Molecular Basis of Inheritance84 Questions
Exam 17: From Gene to Protein106 Questions
Exam 18: Regulation of Gene Expression116 Questions
Exam 19: Viruses71 Questions
Exam 20: DNA Tools and Biotechnology78 Questions
Exam 21: Genomes and Their Evolution64 Questions
Exam 22: Descent with Modification: A Darwinian View of Life68 Questions
Exam 23: The Evolution of Populations92 Questions
Exam 24: The Origin of Species76 Questions
Exam 25: The History of Life on Earth89 Questions
Exam 26: Phylogeny and the Tree of Life91 Questions
Exam 27: Bacteria and Archaea96 Questions
Exam 28: Protists82 Questions
Exam 29: Plant Diversity I: How Plants Colonized Land93 Questions
Exam 30: Plant Diversity II: The Evolution of Seed Plants119 Questions
Exam 31: Fungi105 Questions
Exam 32: An Overview of Animal Diversity93 Questions
Exam 33: An Introduction to Invertebrates111 Questions
Exam 34: The Origin and Evolution of Vertebrates126 Questions
Exam 35: Plant Structure,Growth,and Development82 Questions
Exam 36: Resource Acquisition and Transport in Vascular Plants100 Questions
Exam 37: Soil and Plant Nutrition99 Questions
Exam 38: Angiosperm Reproduction and Biotechnology107 Questions
Exam 39: Plant Responses to Internal and External Signals137 Questions
Exam 40: Basic Principles of Animal Form and Function98 Questions
Exam 41: Animal Nutrition87 Questions
Exam 42: Circulation and Gas Exchange112 Questions
Exam 43: The Immune System123 Questions
Exam 44: Osmoregulation and Excretion91 Questions
Exam 45: Hormones and the Endocrine System92 Questions
Exam 46: Animal Reproduction104 Questions
Exam 47: Animal Development106 Questions
Exam 48: Neurons,Synapses,and Signalling93 Questions
Exam 49: Nervous Systems85 Questions
Exam 50: Sensory and Motor Mechanisms106 Questions
Exam 51: Animal Behaviour91 Questions
Exam 52: An Introduction to Ecology and the Biosphere90 Questions
Exam 53: Population Ecology89 Questions
Exam 54: Community Ecology97 Questions
Exam 55: Ecosystems and Restoration Ecology98 Questions
Exam 56: Conservation Biology and Global Change90 Questions
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The organ(s)of respiratory gas exchange in oligochaetes is (are)
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Nematode worms and annelid worms share which of the following features?
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How many of the following are characteristics of at least some members of the phylum Cnidaria?
1)a gastrovascular cavity
2)a polyp stage
3)a medusa stage
4)cnidocytes
5)a pseudocoelom
(Multiple Choice)
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Use the following information to answer the questions below.
This nudibranch,a type of sea slug,has many reddish cerata on its dorsal surface,as well as two,white-tipped rhinophores located on the head.
The nontaxonomic term sea slug encompasses a wide variety of marine gastropods.One feature they share as adults is the lack of a shell.We might think,therefore,that they represent defenceless morsels for predators.In fact,sea slugs have multiple defences.Some sea slugs prey on sponges and concentrate sponge toxins in their tissues.Others feed on cnidarians,digesting everything except the nematocysts,which they then transfer to their own skins.Whereas the most brightly coloured sea slugs are often highly toxic,others are nontoxic and mimic the colouration of the toxic species.Their colours are mostly derived from pigments in their prey.There are also sea slugs that use their colouration to blend into their environments.
-Which structure do sea slugs use to feed on their prey?

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A shared derived characteristic for members of the arthropod subgroup that includes spiders would be the presence of
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Protostome pattern of development differs from deuterostome in cleavage,gastrulation,and coelom formation.What both patterns of development have in common is the evolution of bilateral symmetry and a body cavity lined with mesoderm.Most of protostome evolution took place in oceans and there are many lineages of protostomes exhibiting diverse body forms.
-Protostome evolution is characterized by several innovations,with the exception of
(Multiple Choice)
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Use the following information to answer the questions below.
Nudibranchs,a type of predatory sea slug,can have various protuberances (i.e.,extensions)on their dorsal surfaces.Rhinophores are paired structures,located close to the head,which bear many chemoreceptors.Dorsal plummules,usually located posteriorly,perform respiratory gas exchange.Cerata usually cover much of the dorsal surface and contain nematocysts at their tips.
-The lateral flaps of planaria heads have a function most similar to that of
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If nudibranch rhinophores are located at the anteriors of these sea slugs,then they contribute to the sea slugs'
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Which of the following are entirely,or partly,composed of calcium carbonate?
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The sea slug Pteraeolidia ianthina can harbour living dinoflagellates (photosynthetic protists)in its skin.These endosymbiotic dinoflagellates reproduce quickly enough to maintain their populations.Low populations do not affect the sea slugs very much,but high populations (> 5 × 10⁵ cells/mg of sea slug protein)can promote sea slug survival.
-If 100 000 sea slug cells together contain 1.0 mg of protein,then what is the minimum number of dinoflagellates per sea slug cell that constitutes a "high," and therefore beneficial,population?
(Multiple Choice)
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The possession of two pairs of antennae is a characteristic of
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How many of the following can be observed in the mesohyl of various undisturbed sponges at one time or another?
1)amoebocytes
2)spicules
3)spongin
4)zygotes
5)choanocytes
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If the dinoflagellate-containing sea slug P.ianthina otherwise preys on coral animals,then it would be least surprising to find that
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Infection with which parasite might cause excessive elasticity in human skeletal muscles?
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Use the following information to answer the questions below.
Nudibranchs,a type of predatory sea slug,can have various protuberances (i.e.,extensions)on their dorsal surfaces.Rhinophores are paired structures,located close to the head,which bear many chemoreceptors.Dorsal plummules,usually located posteriorly,perform respiratory gas exchange.Cerata usually cover much of the dorsal surface and contain nematocysts at their tips.
-The claws on the foremost trunk segment of centipedes have a function most similar to that of
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