A population will always grow exponentially under what circumstances?

• A. If it is limited only by density-dependent factors
• B. Until it reaches carrying capacity
• C. If it is a population with a Type I survivorship curve
• D. None of the listed responses is correct.
• E. If there are no limiting factors

Answer: (E)

Verified step by step guidance

1. Understand the concept of exponential growth: Exponential growth occurs when the growth rate of a population is proportional to its current size, leading to a rapid increase in population size over time.
2. Identify the conditions for exponential growth: Exponential growth happens when there are no limiting factors affecting the population. Limiting factors can include resources such as food, water, and space, as well as predation and disease.
3. Distinguish between density-dependent and density-independent factors: Density-dependent factors are those that intensify as the population size increases, such as competition for resources. Density-independent factors affect the population regardless of its size, like natural disasters.
4. Recognize the role of carrying capacity: Carrying capacity is the maximum population size that an environment can sustain indefinitely. Once a population reaches this point, growth slows down and stabilizes.
5. Evaluate the survivorship curve: A Type I survivorship curve indicates that most individuals live to old age, which does not directly relate to exponential growth. Exponential growth is more about the absence of limiting factors.