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MARINE BIO FINAL EXAM QUESTIONS
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What animal is an example of an acoelomate? A. Phylum Mollusca B. Phylum Platyhelminthes C. Protostomes D. Round worm - CORRECT ANSWERS-B. phylum Platyhelminthes (chapter 6) What are the Red-plumed tube worms found at deep sea-hydrothermal vents? A. Riftia B. Sparisoma radians C. Pisaster D. Charcharinus - CORRECT ANSWERS-A. Riftia (chapter 13) What kind of circulatory system do vertebrates have? A. Extended B. Open C. Rotating D. Closed - CORRECT ANSWERS-D. closed (chapter 7) What is the most widely distributed species of Odontocetes on the planet? A. Dolphins B. Manatees C. Sperm Whales D. Orcas - CORRECT ANSWERS-D. Orcas Coral benefits the _______ by providing carbon dioxide, nitrogen, and phosphorus in excretory products. A. Photosynthesus B. Zooanthids C. Zooxanthellae D. Orectolobid - CORRECT ANSWERS-C. Zooxanthellae What is the second most diverse phylum, only behind Arthropods? A. Protosomes B. Nematoda C. Chordata D. Platyhelminthes - CORRECT ANSWERS-B. Nematoda Which of the following whales does NOT feed by engulfment?
a) Blue whales b) Humpback whales 100% 2024 BY ELITAA c) Gray whales d) Fin whales - CORRECT ANSWERS-C. Gray whales (chapter 8) Which of the following is the most abundant multicellular animal? a) Gastrotricha b) Nematoda c) Entoprocta d) Tardigrada - CORRECT ANSWERS-B. Nematoda How much energy passed through each marine trophic level? a) 20% b) 50% c) 10% d) 90% - CORRECT ANSWERS-C. 10% The Ocean Cleanup on paper sounds like a good idea, but which of the following isn't an issue that scientists have with it? A. Neuston can become crushed and caught in with the garbage since they can't swim or sink B. It doesn't affect the source of the problem C. It collects large garbage leaving behind microplastic D. It is a start to help slowly reduce plastic in the ocean - CORRECT ANSWERS-D. It is a start to help slowly reduce plastic in the ocean Which of the following is not a characteristic of the polar seas? A. Have periods of long days with no sunlight in the winter B. Constant coverage of permeant fast ice C. Nutrients in the photic zone are seasonally depleted D. Addition ice coverage is added due to thawing of pack ice - CORRECT ANSWERS-C. Nutrients in the photic zone are seasonally depleted What family of the Notothenoids group does not contain hemoglobin? A. Chondrichthyans B. Channichthyidae C. Bathydraconidea D. Gadiformes - CORRECT ANSWERS-B. Channichthyidae What is the most abundant marine mammal in the polar seas? a. crab-eater seal b. walruses c. humpback whales d. blue whales - CORRECT ANSWERS-a. crab-eater seal
The phytoplanktons coccolithophore and silicoflagellate both use what kind of chlorophyll? A. Chlorophyll A B. Chlorophyll C C. Both A and C D. Neither A nor C - CORRECT ANSWERS-C. Both A and C Which is not a method for avoiding predation in the open ocean? A. Countershading B. Being low in nutrients C. Bioluminescence D. All of the above - CORRECT ANSWERS-C. Bioluminescence Which is true about garbage patches? A. Garbage patches form when garbage is caught in ocean gyres. B. There are five main garbage patches. C. The Indian Ocean garbage patch is a result of poor garbage management upriver. D. All of the above - CORRECT ANSWERS-D. All of the above Why are suspension feeders found on rocks or areas with coarse sediments?
- sunlight, which suspension feeders need, will be easier to access if on an elevated surface such as a rock
- living on these surfaces will give access to clean water which avoids clogging their filters
- suspension feeders are picky and only want to live on rocks or coarse sediments
- suspension feeders actually do not live on these surfaces because being elevated - CORRECT ANSWERS-2. living on these surfaces will give access to clean water which avoids clogging their filters When an organism from the deep sea is hauled to the surface at a fast pace, what happens?
- deep sea organisms start to dance because they see true sunlight for the first time
- deep sea organisms stay the exact same, nothing happens
- deep sea organisms experience some stress due to the changes in temperature and pressure, but nothing life threatening
- deep sea organisms immediately die or become seriously injured due to the extreme temperature and pressure changes - CORRECT ANSWERS-4. deep sea organisms immediately die or become seriously injured due to the extreme temperature and pressure changes What is a difference between green algae and brown algae? A. Brown algae are chlorophytes; green algae are phaeophytes.
B. Green algae use chlorophyll a, while brown algae do not. C. Green algae are more closely related to plants than brown algae. D. Green algae are mostly marine; brown algae are mostly freshwater. - CORRECT ANSWERS-C. Green algae are more closely related to plants than brown algae. What is the most abundant marine organism? A. Phytoplankton B. Zooplankton C. Bacteria D. Fish - CORRECT ANSWERS-C. Bacteria In estuaries, what organism(s) of the overlying waters contribute to the production of small, energy-rich, detrital particles? A. zooplankton B. bivalves and gastropods C. bacteria and phytoplankton D. sea birds - CORRECT ANSWERS-C. bacteria and phytoplankton Which of these conditions in the deep sea is false? A) The sea bottom is mostly comprised of sand. B) The temperature is stable and mostly uniform. C) There is nearly no light. D) There is a large amount of pressure. - CORRECT ANSWERS-A) The sea bottom is mostly comprised of sand. Diatoms fall under which category of phytoplankton? A. Bacillariophyta B. Ohrophyta C. Dinophyta D. Cyanobacteria - CORRECT ANSWERS-A. Bacillariophyta Which is not a strategy for remaining afloat? a) actively swimming b) blubber c) expanding gas bladders d) creating drag while sinking - CORRECT ANSWERS-c) expanding gas bladders Which of these is not a limiting factor for coral reef establishment? A) Nutrient availability. B) Water salinity. C) Temperature. D) Type of zooxanthellae. - CORRECT ANSWERS-D) Type of zooxanthellae. Which group represents the most abundant microbes in the ocean?
D. Seabirds do no take in excess salts so they have no need to eliminate it - CORRECT ANSWERS-A. Through their kidneys, and special glands located in their mouth, nose, or orbits. Which of the following is not true concerning marine ice? a) Fast ice is attached to the shore b) Melt water has a high salinity c) Pack ice is a collection of sea ice d) A portion of the sea ice thaws and melts each summer - CORRECT ANSWERS-b) Melt water has a high salinity Which of the following is true about benthic organisms? a) macrofauna live on sediment particles b) primary food source for most benthic organisms is zooplankton c) benthic organisms do NOT change the layout of the seafloor d) meiofauna occupy spaces between sediment particles - CORRECT ANSWERS-d) meiofauna occupy spaces between sediment particles What do large scale plastic cleanup efforts threaten in our oceans? A.) They only target the microplastics and not the larger, more visible, items. B.) They will destroy the neuston, an ecosystem built on the "plastic islands". C.) The energy produced through the efforts will increase the rate of global warming. D.) The efforts will cause coral bleaching through an excess of toxic chemicals. - CORRECT ANSWERS-B.) They will destroy the neuston, an ecosystem built on the "plastic islands". Of the deep sea expeditions, which one is the most active and federally funded by NOAA? A) Nautilus B) Okeonos C) MBARI D) WHOI - CORRECT ANSWERS-B) Okeonos The oxygen minimum zone... a) is found between 1000 and 2000 meters b) is the point at which oxygen saturation in the water is at its highest c) has a low oxygen level because of a lack of O2 producing bacteria d) has a low oxygen level because of the high number of deep sea creatures using O2 - CORRECT ANSWERS-c) has a low oxygen level because of a lack of O2 producing bacteria Which of the following about deep sea thermal vents is correct? A) The tube worms (rifta) are equipped with hemocyanin to take in nutrients from the hydrogen sulfide expelled from the vents.
B) The trophosome is an adaptation in tube worms where the respiratory system and digestive system have been replaced with a sponge like environment for symbiotic bacteria. C) Whale falls are inhabited by a drastically different community than deep sea thermal vents. D) Vent communities are some of the oldest communities on the planet. - CORRECT ANSWERS-B) The trophosome is an adaptation in tube worms where the respiratory system and digestive system have been replaced with a sponge like environment for symbiotic bacteria. What's the chemical compound responsible for bioluminescence? A. Chloroplast B. Stachydrine C. Leonurine D. Luciferin - CORRECT ANSWERS-D. Luciferin What is one-way Zooxanthallae benefit corals? A.) They provide nutrients, remove CO2, and provide O2 to the corals. B.) They will allow coral polyps to retract their tentacles during the day time. C.) They produce organic matter for the corals through cellular respiration. D.) They help the corals minimize wave shock by allowing them to compress their bodies. - CORRECT ANSWERS-A.) They provide nutrients, remove CO2, and provide O2 to the corals. These marine birds migrate large distances, often up to 40,000 miles in one event A. Pelecaniformes B. Charadriiformes C. Procellariiformes D. Sphenisciformes - CORRECT ANSWERS-C. Procellariiformes Which of the following adaptive adaptive associations for deep sea animals is incorrect? A) Lower metabolism and subsequently growth rate to deal with lower nutrients and temperature. B) Fluid filled buoyancy organs or structures whe high pressure prevents fas from diffusing into a swim bladder. C) Tubular eyes with two sets to perceive bioluminescent light nearby and far away. D) Powerful olfactory sensors to detect zooplankton prey in the water column. - CORRECT ANSWERS-C) Tubular eyes with two sets to perceive bioluminescent light nearby and far away. Which organism was recently found in the Antarctic? A. Coral B. Sea anemone
C) Epipelagic Zone D) High Zone - CORRECT ANSWERS-C) Epipelagic Zone What is the structure that attaches seaweed to the sea bottom. A) Holdfast B) Fast hold C) Haptera D) Stipe - CORRECT ANSWERS-A) Holdfast What is the flask-shaped organ filled with a jelly-like substance located on the snout and pectoral fins of class chondrichthyes that allows them to perform electroreception? A. Ampullae of Lorenzini B. Nematocysts C. Labrynth organ D. Tympanic bulla - CORRECT ANSWERS-A. Ampullae of Lorenzini Which describes the migration pattern of some eels that begin their lives in the ocean and move to freshwater as adults? A. Anadromous B. Diurnal C. Catadromous D. Seasonal - CORRECT ANSWERS-C. Catadromous Deep sea organisms that have merged the roles of predator and deposit feeders are known as a: A. Deposit feeder B. Bentho C. Cropper D. Hemocyanin - CORRECT ANSWERS-C. Cropper The ecosystem exposed to extremely high tides and breaking waves while also inhabiting marine organisms is the: A. Upper Intertidal Zone B. Lower Intertidal Zone C. Middle Intertidal Zone D. Rocky Shores - CORRECT ANSWERS-A. Upper Intertidal Zone All members of the phylum Chordata at some point during their development possess one of the following structural features except: A. Notochord B. Meta meres C. Postanal tail D. Dorsal nerve cord - CORRECT ANSWERS-B. Meta meres
Which of the following is hypothesized to be where life originated on earth roughly 3.5 billion years ago? A. Warm tidal pools B. Deep sea vents C. The open ocean D. Both A and B - CORRECT ANSWERS-D. Both A and B
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