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MB Final Exam
Marine Biology Final EXam Review
| Question | Answer |
|---|---|
| List the world's major ocean basins. Which one is the largest and deepest? Which one is the smallest and shallowest? | The major ocean basins are the Alantic, Pacific, Artic, and Indian The largest and deepest is the Pacific The smallest and shallowest is the Artic. |
| What were the following and when did they exist: a. Pangaea b. Panthalassa c. Gondwanna d. Tethys Sea e. Sinus Borealis | a. all of the continents together b. vast ocean c. subsupercontinent, pangea broke apart d. Shallow sea forming when pangea broke apart. e. begining of the artic ocean |
| Where are the following parts of the continental margin and seafloor located: a. continental shelf b. shelf break c. continental slope d. continental rise e. abyssal plain | a. shallowest part, most animals b. end of the continential shelf c. slope very steep d. all the sediment that rest off the continentale slope e. oceanic crust out past the margin flat. |
| list the differences between continental crust and oceanic crust. | oceanic- thinner, more dense, basalt continential-thicker, less dense, granite |
| What is a mid-ocean ridge? List the events that take place along mid-ocean ridges. | Underwater mountains that form along a mountain range. Events:Seafloor spreading, volcanoes, earthquakes |
| What is seafloor spreading? | Plates are diverging new crust is being formed. Rock gets older the farther you get away |
| What is a trench and how do they form? | Plates are converging while one is subducting over the other |
| What is salinity? What unit is used to measure salinity? | Salinity is dissolved salt continent. The unit is measured in parts per thousand. |
| What ions are the most common in sea water? Percentage? | sodium cloride ions are most commly found in sea water and the percentages is 85% |
| Explain the rule of constant proportions. | The relative amounts of ions in the water are the same. |
| What is a wave? | A wave is a movement of energy |
| List the different parts of a wave. | crest=Top of the wave trough=bottom |
| What is wavelength? Period? | wavelength is the distance from crest to crest period is the amount of time it take teo crests to pass a certain point. |
| List the factors that determine the size of wind-driven-waves. | 1. the amount of time wind blows on the water 2. the velocity of the wind 3. the area which its blowing |
| What are gyres? Which direction do they spin in the Northern Hemisphere? SOuthern Hemisphere? | Gyres are surface currents in the sea due to earths rotation In the northern Hemisphere they spin clockwise In the sounthern hemisphere they spin counterclockwise |
| What causes the earth's tides? | Gravational pull of the moon and the sun. |
| How long is a full tidal cycle? | 24 hours and 50 minutes |
| What is a spring tide? Neap tide? | Spring tide=new moon/full moon/highest tidal range neap tide=crecent moons/quarter/ half moon/ largest tidal range |
| What is the Coriolis effect? | earths rotation |
| List the 4 general organic compounds. What is the function for each. | Carbohydrates store energy lipids aid in bouyancy, repells water protein-hormone, hair, enzyms nucleic acids=DNA |
| Write the formula for photosynthesis | 6H2O + 6CO2 ----------> C6H12O6+ 6O2 |
| Write the formula for cellular respiration. | C6H2O6 + O2 → CO2 + H2O |
| What is primary production? | When an autotroph produces more organic compounds than needed to survive. |
| Explain the difference between osmoconformers and osmoregulators. | osmoconformers the organisms salinity varies with the environment osmoregulators regulate the salinity of there environment |
| How does osmoregulation between freshwater and marine fishes differ? | Marine fish drink water but lose water due to the salt water they live in freshwater fish lose small amounts of water and drink huge amounts |
| Explain the difference between ectotherms and endotherms. | ectotherms have the same temperture as the environment endotherms maintain a constain temperature |
| Explain the general difference between nektonic, planktonic, and benthic organisms. | nektonic swim around planktonic drift benthic live on the bottom |
| Explain the Theory of Natural Selection | Organisms better adapted for survival produce offspring that carry those genetics |
| What is evolution | The genetic change in population over time |
| What are cyanobacteria (blue-green algae)? | They are photosynthetic bacteria |
| What is chemosynthesis? | Chemosynthesis is when a bacteria uses Chaemical energy and stores in a form of sugar. |
| To which kingdom do diatoms, diniflagellates, radiolarians, and foraminiferans belong? | Protistia (Prostitute bacteria ewwwww) |
| What is the main difference between algae and cyanobacteria (Blue-green algae)? | cyanobacteria is procaryote algae is eurkayotic |
| What is a red tide | algae bloom of dinoflagulas |
| What are zooxanthellae and why are they important? | Zooxanthellae are dinoflagulas that live in tissues of corals and invertebrates, they provide the sugar for corals. |
| What are the dominant prmary producers in tropical seas? Polar seas? | tropical seas=dinoflagalets polar seas=diatoms |
| What is the main difference between seaweeds and other algae? | Seaweeds are mostly multicellular algae are mostly single celled |
| List the body parts of the kelp thallus. | Blade, stiphen, hold fast, float which is also called the numastists |
| Explain the difference between bilateral and radial symmetry. What is the advantage of bilateral symmetry? | Bilateral symmetry is symetrical only 1 way and organ systems form radial symmetry the orgamism can be dived evenly all the way around |
| To which phylum do the following belong: a.Sponges b. Jellyfish and corals c. Clams and snails | a. porferia b. nidaria c. molluska (summer) |
| What is a nematocyst? What is the harpoon structure called? | the Nematocyst is the stinging cell of a Jellyfish the harpoon structure is called a chinodoblast |
| What evolutionary advancements do flat worms have over cnidarians? Ribbion worms over flat worms? | flat worms over cnidarians=first central nervous system, bilatery symmetry ribbion worms over flat worms=complete digestive tract, circulatory system |
| Segmented worms over round worms? | Segmented worms over round worms=complete digestive tract, gills, segmentation, closed sirculatory system |
| What type of mollusks belong to the following classes: a. bivalvia b. gastropoda c. cephalopoda | a. clams, muscles, ostyers b. nudebranchs,slugs,snails c. squid,octopuses, cuddlefish,nadilist |
| List the three main body parts that make up a mollusk? | foot,mantal, visoral mass |
| what is the function of the bivalve mantle? | The bivalve mantle makes the shell |
| What is larva? | immature phase of an organism |
| to which phylum do starfish,sea urchins, sea cucmbers, and brittle stars belong? | echinodermada |
| Explain how starfishfeed.What are tubefeet? | the star fish gets its tubefeet forces the clam open then spits its stomach inside of the clam and devours its prey |
| Which type of symmetry do echinoderms (starfish) exhibit? | radial |
| Describe the echinoderm circulatory system. | water for blood, water vascular |
| What is an arthropod exoskeleton and what is it made of? | Chition |
| list two types of jawless fish. | hagfish and lamphry |