University of Rio Grande

Invertebrate Zoology Bio 33404

Sample Exam 1

This sample test is meant to give you an idea of the types of questions that will be on the exam. Simply memorizing the answers to these questions will not get you a good grade on the exam. You should consider these questions as well as related questions.

Multiple choice : Chose the BEST answer to each of the following questions. There will be 40 questions of this type on the exam. Each question is worth 1 points. Here are 12 examples.

1. All of the following are characteristic of animals EXCEPT
a. consumer

b. ingestion

c. multiple cell types

d. prokaryotic

 

2. A derived characteristic is one that
a. is the same as in the ancestor
b. is different from the ancestral condition
c. has no relation to the ancestral condition

 

3. Which of the following eras is the oldest?
a. Cenzoic

b. Mesozoic

c. Paleozoic

 

Suppose a zoologist is concerned about how acid mine run-off may be affecting the survival of midge larvae in streams. S/he designs an experiment to test this.

 

4. The manipulated variable in the experiment would be
a. pH

b. % survival

c. water temperature

d. water type

5. The control for this experiment would be
a. pH 2

b. pH 3

c. pH4

d. pH 6

e. pH 7

 

6. All of the following are distinguishing characteristics of the Phylum Porifera EXCEPT
a. many small pores

b. sessile

c. 2 tissue layers

d. multicellular

 

7-9. Match the following
___ 7. Calcarea
___ 8. Demospongiae
___ 9. Hexactinellida

 

a. spicules of calcium, 3 or 4 rays

b. spicules of silicon, 6 rays

c. spicules of silicon or spongin, not 6 rays

d. spicules of spongin, 6 rays

 

10. The epidermis of an animal in the phylum cnidaria contains all of the following cells EXCEPT
a. musculo-epithelial

b. cnidocytes

c. musculo-nutritive

d. sensory

 

11. All of the following are Hydrozoans EXCEPT
a. Aurelia

b. Hydra

c. Obelia

d. Physalia

 

12. The medusa of a hydrozoan differs from the medusa of a scyphozoan in that
a. hydrozoan medusa have tentacles and scyphozoans do not
b. hydrozoan medusa have a velum and scyphozoans do not
c. hydrozoan medusa have a mesaglea and scyphozoans do not
d. hydrozoan medusa have cnidocytes and scyphozoans do not

 

 

Essays (40 points): This section consists of 4 essay questions worth 10 points each. Here are two examples.

 

1. Name and describe 3 methods that can be used to sample soil invertebrates.

 

2. Name 5 cell types found in sponges. For each, describe (or draw) its shape and describe its function.

 

Identification (20 points) This section consists of 8-12 stations each with 1-3 questions. Observe the organisms at each of the stations and answer the questions indicated next to the sample. Below are a few samples using photos. The exam with have microscopes with slides and lab specimens for most.

 

 

1. What is the name of the structure on this microscope slice?

 

 

2. What is the genus name of this organism?

3. To what class and phylum does it belong?

 

 

4. What is the genus name of this specimen?

5. What is the name of the dominant polyp type in the photo?

 

Last Updated: August 23, 2006