Sharks - Study guides, Class notes & Summaries

. The two largest groups of marine reptiles are the ( ) and ( ) . - marine turtles, sea snakes ( ) are Herbivorous marine mammals related to elephants - dugongs • More people are attacked and killed by saltwater crocodiles than sharks - true 5. Unlike other marine mammals, sea otters lack ( ) and rely on their rich fur for insulation. - blubber A great drop in atmospheric ozone levels, thought to be caused by CFCs, currently occurs over Antarctica. - true A much greater diversity of f...

MSC Test 3 Questions & Answers 2024/2025 What is reproductive range? - ANSWERS- where they reproduce - factor in determining the distribution of a marine organism what is dispersal - ANSWERS- eggs getting dispersed into the ocean what is recruitment - ANSWERSorganism grows up and joins adult population what is a niche? - ANSWERS-particular place where an organism is best adapted for - where they live How do plankton move? Nekton? - ANSWERSplankton: - they are drifters - in...

Foreign Policy - Answer--Determines HOW & WHEN specific outcomes take place -Decision making -Rationality 1) Doing what is in the best interest for the specific individual -Risk Acceptance/Aversion -It's a process and strategy to achieve a state interest -Tries to spell out goals & objectives -*Most Important*= Individual -*Biggest Problem*= Rationality. Rationality is about self-interest, and an individual could turn irrational -Key Differences between IR Theory and________is the Ro...

FRESHWATER ORGANISMS QUIZ REVIEW Chondrichthyes ANSWER = sharks and rays Gills ANSWER = organs that exchange oxygen and carbon dioxide with water in fish amphibian fertilization ANSWER = external, in moist areas Aves ANSWER = class of birds Ostechthyes ANSWER = bony fish, have a swim bladder for buoyancy Ectothermic animals ANSWER = body temperature is affected by the environment. Anura ANSWER = frogs and toads Urodela ANSWER = salamanders and newts Dinosaurs ANSWER = birds ar...

Is energy required to move oxygen and carbon dioxide across membranes? correct answers No, it is done via passive diffusion from high partial pressure to low partial pressure. How do internal and external respiration differ? correct answers Internal: gas exchange between the blood and the tissues External: gas exchange between the environment and the blood What processes constitute respiration? correct answers Delivery of oxygen to tissues and removal of waste products; can be external (...

A macdonald - -2500m amphipods Absense of groups in deep sea - -not a result of inability to adapt -result of habitat not being suitable Abyssopelagic - -dark -below 4000m Achieving neutral buoyancy - -reduce heavy materials (increase water content) -lower density of body fluids -add lipids -add gas (hard boxes=nautilus, spirula, cuttlefish),(soft boxes=siphonophores, fishes, ocythoe) adaptations to low O2 - -enhanced oxygen uptake -enhanced anaerobic activity -metabolic arrest -pC v...

Phylogeny - Classification of organisms according to evolutionary relationships. Taxonomy - Evolutionary classification Linnaean system of classification (taxonomy) - Domain> Kingdom> Phylum> Class> Order> Family> Genus> Species (Did King Phillip Come Over For Grandma's Soup) [ex. Homo sapien](italicized) Phylogeny relationships - Basal Group: Branch from oldest common ancestor, no other branch from species. Sister Taxa: Share common ancestor Homologies - Comparing...

Acanthostega correct answer: 360 MYA, first amphibian/ tetrapod had gills, tail fin, labryinthodont teeth, free digits Arthodires correct answer: 20 ft long, jawed fish, big ass fish, top predator but very slow Amino acids correct answer: proteins of life Agnatha correct answer: chordate jawless fish Lobefin fishes correct answer: more complex, has little paddle like bones; includes lung fish, coelacanth, osteolepiforms. Gave rise to amphibians DNA correct answer: nucleic ac...

Euphotic zone - Answer-first 200 meters -where photosynthesis can take place -suns radiation can be absorbed Seed Plants - Answer--true plants -not very abundant -grasses, eelgrass and surfgrass -mangroves -like warm, muddy waters -have a root system Protists - Answer-a) large algae(seaweed) -brown algae(kelp), green (sponge weed), red (rhodophyta) b) phytoplankton(small algae) -most producers -diatoms -coccolithophores -dinoflagellates Eukaryotes - Answer-seed plants and protist...

During feeding, sharks have a _________ that covers their eyes for protection. Nictating membrane The shark with the longest fin is the __________. Thresher shark Which shark attacks humans the most? Great White Which one is a filter feeder? A. Sting Rays B. Sand Sharks C. Manta Rays D. Dogfish Sharks C. Manta Rays A Mako shark can swim very fast. They have been tracked at _________ mph. 45 to 60 True or False: Piked Dogfish sharks are the only sharks found in freshwater. False. M...