1. Unit #1, Quiz #2 Grade: «grade» Subject: «subject» Date: «date»

2. 1Which of the following is the formula for ammonia: A NH 3 + B NH 3 - C NH 3 D NH 4 +

3. 2Which of the following fish would have placoid scales: A bass B catfish C salmon D tiger shark

4. 3Which of the following is the formula for carbonate: A CO 4 3- B CO 2 - C CO 2 D CO 3 2-

5. 4You would see the following scale type on which type of fish: A fast moving B ancient fish C large fish D recently evolved fish

6. 5Overnight the temperature in your aquarium went from 25 o C to 35 o C. What would happen to the approximate metabolic rate of your cold-blooded aquatic organisms? A It would remain unchanged B It would double the original rate C It would be one half the original rate D It would be one quarter the original rate

7. 6You notice one of your fish is scrapping itself against rocks. This is most likely due to _______ and can be described as a ________ relationship. A flukes, mutualistic B flukes, parasitic C ick, mutualistic D ick, parasitic.

8. 7Which of the following fins is used to generate forward motion in the majority of fish: A pectoral B pelvic C dorsal D caudal

9. 8During the nitrogen cycle, which of the following is the correct order of TAN compounds A NH 3 --> NO 3 - --> NO 2 - B NH 4 + --> NO 3 - --> NO 2 - C NH 3 --> NO 2 - --> NO 3 - D NH 4 + --> NO 2 - -->NO 3 -

10. 9You are in the Pacific Ocean deep sea fishing. The first fish you catch has small, but fully functional eyes. The second fish has very large eyes. At which depth would each of these fish most likely live? A Fish 1 - deep water, Fish 2 - shallow water B Fish 1 - deep water, Fish 2 - deep water C Fish 1 - shallow water, Fish 2 - deep water D Fish 1 - shallow water, Fish 2 - deep ocean cave

11. 10Which of the following is the formula for phosphate: A PO 3 4- B PO 2 4- C PO 4 3- D PO 2 4+

12. 11True or False: Taste buds can be found on many different extremities of a fish. True False

13. 12Which of the following is the first chemical waste product formed by the break down of urea/dead organisms/left-over food? A NH 3 B NH 4 C NH 3 + D NH 4 +

14. 13The ostracoderm is thought to be the first species with: A A backbone B A mouth C A jaw D A spinal cord

15. 14The following type of fish scale is called: A ganoid B cycloid C ctenoid D placoid

16. 15Which of the following is removed from an aquatic system by algae or water plants? A NO 3 - B NO 2 - C NH 3 D NH 4 +

17. 16You notice that one of your fish has a severely distended abdomen, the scales around the abdomen are popping off, and the fish refuses to eat. This fish most likely has: A a swim bladder infection B ammonia toxicity C a nematode worm D dropsy

18. 17The first limiting factor in any aquatic system is: A Dissolved Oxygen (DO) B Total Ammonia/Nitrogen (TAN) C Dissolved Carbon Dioxide (DCO) D Total Amaxia/Noxious (TAN)

19. 18Which of the following is the formula for nitrate: A NO 3 - B NO 2 - C NH 3 D NH 4 +

20. 19You notice that your fish are eating less and are occasionally listless. After two weeks of this behavior, one of your fish dies and the others continue to behave the same as before. This is an example of: A Acute mortality B Peracute mortality C Chronic mortality D Spontaneous mortality

21. 20Overnight the temperature in your aquarium went from 35 o C to 25 o C. What would happen to the approximate metabolic rate of your cold-blooded aquatic organisms? A It would remain unchanged B It would double the original rate C It would be one half the original rate D It would be one quater the original rate