Animal Physiology, Spring, 1995

Bi 377, Hour Exam II

Instructions:

1) After receiving the exam, you are free to work on the answers in any classroom in Boyd Hall.

2) You may not use any information other than what you have stored in your brain (no notes, books, etc.)

3) Please limit your answers to the space provided beneath each answer. Feel free to use labeled diagrams to enhance your answers. Write clearly and concisely.

4) You have 1.5 hours to complete this examination. Remember that you have agreed not to discuss this examination with anyone else in the class until all have taken it (I will let you know in class).

5) Please sign below if you agree to the above policies.

GOOD LUCK!

Honor Statement: I have read the above instructions and agree to them. I promise to neither give nor receive any help on this examination.

Signed,

Short Answer. The number of points that each question is worth follows the questions in parentheses. These questions can be answered in 2-4 sentences or a labeled diagram and 1-2 sentences.

1) A circadian clock is located in the SCN of mammals. Using the information that we discussed in class and from your reading, briefly discuss the evidence that supports this statement. (10)

2) Briefly describe what you know about electroreception in fish. (7)

3) Identify four (out of five) following in one or two sentences: (@3: 12 total)

a) avian pineal gland

b) fovea

c) pheromone

d) medulla oblongata

e) hemoglobin

4) When thinking about respiratory physiology it is important to keep the environment in mind. List at least three factors that differ (or differences) between air and water and briefly explain. (8)

5) List several of the functions of body fluids in animals. (7)

6) Using a diagram and a few explanatory sentences, explain the counter-current principle. (8)

7) Briefly compare/contrast the anatomical/physiological differences seen between aquatic and marine crabs. (8)

Essay Questions: Answer the following question in essay format (a paragraph or two with topic sentences followed by information supporting the topic sentence). You can also use the back side of this sheet of paper. DIAGRAMS (FIGURES) ARE ALSO STRONGLY ENCOURAGED!

1) Describe how mammals detect vibrations (hear sounds). (20)
2) Compare and contrast the physiological functioning of Limulus and vertebrate (Necturus) photoreceptors (20)