Unit #1 Exam Review Quiz, Grade: «grade» Subject: «subject» Date: «date»

1A bloom of phytoplankton has turned a normally clear portion of the ocean into a murky/cloudy portion. This section of water can be best described as having: A Low turbidity B High turbidity C Low TAN D High TAN

2Which of the following is a substance/organism that removes dangerous TAN from an aquatic system: A algae B terrestrial plants C feces D nitrate

3True or False: Fish are the most numerous/diverse vertebrates on the planet. True False

4When considering a sick fish, which of the following is a symptom of slime disease: A An inability to regulate buoyancy B An excessive amount of mucus near the gills C Loss of scales D A significant amount of tiny white bumps appearing along the lateral line

5A group of _________ makes up a population. A Individuals of the same species B Biomes C Ecosystems D Communities

6Cycloid scales found on salmon and carp are best described as: A “one-way” with sharp edges B Diamond-shaped, shiny and hard C Smooth surfaces and smooth, overlapping edges D Rough surfaces and serrated, overlapping edges

7Which of the following would be considered an sensible adaptation to an environment: A Fish that live in the open ocean are often colorful B Fish that are dominant predators have relatively small teeth C Fast swimming fish only have a soft dorsal fin D Fish that live in a low-light environment have large eyes.

8What percent of energy is "lost" as energy moves up an ecological/food pyramid? A 10% B 25% C 65% D 90%

9A community is made up of A a group of populations B a group of individuals C a group of organisms D a group of biomes

10Which of the following is the formula for ammonia: A NH 3 + B NH 3 - C NH 3 D NH 4 +

11Which of the following fins is located on the most posterior portion of the fish: A Soft Dorsal Fin B Caudal Fin C Pectoral Fin D Pelvic Fin

12The ostracoderm is thought to be the first species with: A A backbone B A mouth C A jaw D A spinal cord

13True or False: The limiting factors of a habitat depend upon that habitat's carrying capacity. True False

14If an aquatic system is suffering due to a massive increase in ammonia, all of the following will help lower the ammonia to a safe level EXCEPT: A Removing aquatic plants B Adding aquatic plants C Stimulating more algae growth D Reducing the amount of food going into the system

15A climax community is characterized by A population increase B population decrease C population mortality D population stability

16Ichthyophthirius multifiliis is the protozoan that causes “white spot” disease, or “ick.” Ichthyophthirius is the____________. A Species B Genus C Kingdom D Phylum

17An organism’s role in an environment (how it survives, obtains food & shelter, and avoids danger) is known as its: A Community B Biosphere C Habitat D Niche

18Which anatomical/sensory feature prevents schooling fish from bumping into each other: A Spinous dorsal B Dorsal Line C Lateral Line D Spinous Lateral

19A group of zebrafish are put through a series of ongoing stress experiments over 3 months. Which of the following is NOT a likely result: A elevated levels of cortisol B a general increase in appitite C an increase in occurance of secondary infections D shrunken and/or damaged spleens

20Which of the following fins is located on the ventral portion of a fish's body: A Dorsal Fin B Mouth C Pelvic Fin D Caudal Fin

21All of the following are examples of stressors EXCEPT: A Adequate shelter B Too much food C A spike in pH levels D Tapping on the glass of an aquarium

22You are in the Pacific ocean deep-sea fishing near a known series of underwater caves. The first fish you catch has small, but fully functional eyes. The second fish has scales covering where its eyes would normally be. At which depth would each of these fish most likely live? A Fish 1 - shallow water, Fish 2 - deep water B Fish 1 – in a deep water cave, Fish 2 - shallow water C Fish 1 - deep water, Fish 2 - deep water D Fish 1 - shallow water, Fish 2 – in a deep water cave

23All of the following will occur when temperature is decreased within an aquatic system, EXCEPT: A There will be less thermal energy available B The concentration of oxygen will increase C The metabolism of the cold-blooded organisms will decrease D The concentration of TAN will increase

24Which of the following is most anterior when considering a model fish: A Gill cover B Spinous dorsal C Caudal fin D Pelvic fin

25Water is drawn in the mouth of a fish and passes over the __________ allowing oxygen to _____________ into the blood of the fish. A Gill Covers, diffuse B Lateral Line, osmose C Gills, diffuse D Lungs, osmose

26You come into class in the morning and notice that all life within your large aquarium has died overnight. This is an example of: A Acute mortality B Peracute mortality C Chronic mortality D Spontaneous mortality

27You notice that one of your fish has suddenly died with no visible signs of illness. This is an example of: A Acute mortality B Peracute mortality C Chronic mortality D Spontaneous regeneration

28Which of the following hormones is secreted into an organism’s system when it becomes stressed: A Serotonin B Dopamine C Insulin D Cortisol

29All of the following are examples of abiotic factors EXCEPT: A A large stone B Intense sun light C Decomposing plankton D Strong wind

30Which of the following change would help increase the rate at which a sick fish takes in medication: A Decreasing the temperature of the tank B Increasing the temperature of the tank C Decreasing the pH of the tank D Increasing the pH of the tank

31Gars are fish that can be found in fresh water all over the planet. The fossil record suggests that they have been around for at least 250 million years. These ancient fish have diamond-shaped scales called: A Placoid Scales B Ganoid Scales C Cycloid Scales D Ctenoid Scales