Question

1. long life expectancy usually correlates with all the following except

a. high levels of prenatal care
b. larger animals
c. type 1 & 2 survivorship curve
d. rapid reproduction

1. which of the following is not a density - dependent factor?

a. storms
b. disease
c. competition
d. predators

1. what causes a j curve to flatten into an s curve?

a. exponential growth is beginning
b. the death equals the birth rate
c. logistic growth is beginning
d. limiting factors affecting the population

1. over - exploitation of animals is likely to cause

a. speciation
b. species extinction
c. interspecific competition
d. behavioral isolation

1. the graph on the right shows

a. logistic growth
b. exponential growth
c. an s curve
d. a j curve
e. both a & c
f. both b & d

1. which letter represents the carrying capacity for this population?

a. a
b. b
c. c
d. d

Explanation:

• Question 7: High - level prenatal care, larger animals, and type 1 & 2 survivorship curves are associated with long life expectancy. Rapid reproduction is not; species with rapid reproduction often have shorter life - spans.
• Question 8: Density - dependent factors are influenced by population density. Disease, competition, and predators are density - dependent. Storms are density - independent as they affect populations regardless of density.
• Question 9: Limiting factors such as resource availability cause a J - curve (exponential growth) to flatten into an S - curve (logistic growth).
• Question 10: Over - exploitation of animals can lead to species extinction as the population is reduced beyond its ability to recover.
• Question 11: Logistic growth is represented by an S - curve. An S - curve shows an initial exponential phase followed by a leveling off due to limiting factors.
• Question 12: The carrying capacity is the maximum population size that an environment can sustain. In an S - curve, it is the upper - most flat portion of the curve.

Answer:

1. d. rapid reproduction
2. a. storms
3. d. limiting factors affecting the population
4. b. species extinction
5. e. both A & C
6. It is not possible to determine without seeing the graph. If we assume a typical S - curve graph, the carrying capacity is the upper - flat part, but without the visual, we cannot assign a letter.