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Version 1

1. Which of the following is a disadvantage of an exoskeleton?

2. Which of the following animals do NOT have tissues?

3. Which of the following organisms have an exoskeleton?

4. Tetrapods are the direct descendants of

5. In amphibians, what function does the cloaca serve?

6. This vertebrate is a fish, has a cartilaginous skeleton, no jaws, and a tooth-covered tongue. This animal is a

7. The number of individuals of the same species in some specified area or volume of habitat is the

8. The most common type of population distribution is

9. A change in a population that is NOT related strictly to the size of the population is best described as

10. Which of the following models of growth takes place when the amount of available resources is not limiting?

11. Jellyfish are as likely to die at one age as any other. Thus, a type ___ survivorship curve characterizes their life history.

12. What invention about 11,000 years ago led to a boom in the human population?

Version 2

1. This animal has radial symmetry, a gastrovascular cavity, and the same opening is for the entry of food and expulsion of waste. It is ___.

2. Which of the following are characterized by radially symmetrical members?

3. Sponges are

4. This animal is a tetrapod that has a cloaca, aquatic larvae, and is tailless as an adult. This animal is

5. Amniotes differ from amphibians by

6. This vertebrate is a fish, has a cartilaginous skeleton, no jaws, and a tooth-covered tongue. This animal is a

7. The most common type of population distribution is

8. The number of individuals that make up a population gene pool is the

9. Which of the following factors is NOT a density-independent factor?

10. A change in a population that is NOT related strictly to the size of the population is best described as

11. Most octopuses die early in life; those that survive can live up to 5 years. Octopuses are best characterized by a type __ survivorship curve.

12. What invention about 11,000 years ago led to a boom in the human population?  

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    SCI 115 Quiz 9

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