Study Guide for Exam 3 Vocabulary words and Groups you must know

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Bio 115, Marine Biology Study Guide for Exam 3


Vocabulary words and Groups you must know:

Taxonomy: Domain, Kingdom, Phylum, Class, Order, Genus, species

Vertebrates vs. invertebrates

Vertebrata: gill slits, notochord, dorsal nerve cord

Agnatha, Chondrichthyes & Osteichthyes


Anadromous vs. catadromous

Operculum, Spiracles, Lateral line

Ch. 8

mpullae of lorenzini

Swim bladder


Caudal, dorsal, anal, pectoral and pelvic fins

homocercal vs. heterocercal

Ectothermic vs. endothermic & poikilotherms

Placoid, dentricles, cycloid, ctenoid

Ovoviviparous, oviparous, viviparous



Reptilia, Aves & Mammalia


Pneumatized bone


Ch. 9


Piscivores, herbivores, carnivores




Bends condition

Species, population, community, ecosystem

Explain and diagram in bold: Population growth, birth rates, death rates, lag phase

Linear growth, exponential growth, logistic growth, J-curve, S-curve

Ch. 10

nvironmental resistance, carrying capacity, density dependent and density independent

Competition, predation, symbiosis, mutualism, commensalisms, parasitism Competitive exclusion, resource partitioning, marine communities

Trophic levels (producers, consumers, decomposers)

Carbon cycle, fixation, gross & net primary production, respiration (**save for next one)

Ch. 11

Factors that affect distribution, diversity, and abundance in different habitats.

-Fouling and Intertidal communities
Know the similarities and differences between the following groups (some key characteristics of each phyla are included here, but not all of them…see text and notes):


      gill slits, notochord, dorsal nerve cord, post anal tail

     subphylum Urochordata:  sea squirts, salps, larvaceans, suspension feeders

     subphylum Vertebrata:  fish, birds, reptiles, mammals and amphibians

Agnatha (hagfishes & lampreys)

Chondrichthes: Rays, skates, sharks, ratfishes vs. Osteichthyes: Bony fishes

Class Reptilia

Marine Iguanas, turtles, crocodiles & snakes

Class Aves

Shorebirds, divers, predators and surface hunters

Class Mammalia

Order Pinnipedia, Order Carnivora, Family Musetlidae, Ursidae,

Order Sirenia, Family Dugongidae, Trichechidae

Order Cetacea (baleen, rorquals, toothed)
Exam Necessities:

Pencil, eraser, Scantron 882, rested and prepared minds,,,,Good luck and study hard.  

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