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2009_1st_midterm_v1_key - Page 1 PRINT NAME AND ID_KEY BIEB...

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Page 1 PRINT NAME AND ID #: _________ KEY _____________________________ BIEB 132: Introduction to Marine Biology 1 st midterm, Oct 22, 2009 Before you begin, write your name on each page. Answer in blue or black ink only. Each question is worth 2 points. Multiple choice questions have only one correct answer. You have 45 minutes for the exam. Good luck! Multiple choice (circle correct letter) 1. “Milky seas” are bioluminescent displays produced by: a) dinoflagellates b) coccolithophorids c) bacteria d) spawning worms 2. Pressure increases 1 atmosphere for every _______ depth: 3. Which hydrothermal vent animal lives at the highest temperatures: 4. Luminescent camouflage works best in : 5. Oxygen is transported into the fish air bladder by: a) lactic acid b) osmotic pump c) active transport d) diffusion 6. Coral bleaching occurs when corals expel their symbiotic: 7. The sulfide-binding protein in the blood of the hydrothermal vent tube worm Riftia : Short answer (one sentence only) 8. Name one strategy to reduce viscous drag. laminar boundary layer, riblets, tubercles, mucus, porpoising, no scales; NOT streamlining or shape changes 9. Describe one “monster of the deep”. bristlemouth–most abundant vertebrate; oarfish–longest bony fish; giant squid–one of largest invertebrates; gulper eel–big mouth, eats prey larger than itself; sixgill shark–largest deep-sea shark; vampire squid from hell–defensive behavior; hagfish–slimiest; anglerfish(devilfish)– glowing lure
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Page 2 PRINT NAME AND ID #: _________ KEY _____________________________ Fill in the blank 10. Define DIC: _________dissolved inorganic carbon ________________________________ 11. What is currently the most abundant form of DIC? _____bicarbonate or HCO 3 - __________ 12. As ocean pH decreases, what form of DIC becomes limiting? __carbonate or CO 3 2- ; NOT calcium carbonate Multiple choice (circle correct letter) 13. Which type of shellfish poisoning is not caused by a dinoflagellate?
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