Population ecology – growth, regulation, strategies - One Line Questions

1. A population with a large proportion of young individuals is likely to experience: — A rapid increase in population size
2. In a predator-prey population cycle, an increase in the prey population typically leads to: — An increase in the predator population
3. What is a 'population strategy' in ecology? — A set of adaptations and behaviors that influence a population's growth and survival
4. A population with a large proportion of old individuals is likely to experience: — A declining growth rate
5. Which term refers to the sum of all environmental factors that limit population growth? — Environmental resistance
6. Which term refers to the actual number of offspring produced by an individual? — Fertility
7. What is 'r' in the exponential growth equation (dN/dt = rN)? — Intrinsic rate of increase
8. What is the term for the inherent reproductive capacity of a species under ideal conditions? — Biotic potential
9. In which type of population distribution do individuals spread out evenly, often due to territoriality or competition? — Uniform distribution
10. Which of the following describes a form of population regulation where the population size oscillates around the carrying capacity? — Cyclic fluctuations
11. Which factors limit population growth by increasing the death rate or decreasing the birth rate as population size increases? — Density-dependent factors
12. A population's age structure, referring to the proportion of individuals in different age groups (pre-reproductive, reproductive, post-reproductive), influences its future: — Growth rate
13. The mathematical model for exponential population growth is often represented by the equation: — dN/dt = rN
14. The logistic growth equation is often represented by: — dN/dt = rN(1 - N/K)
15. Which of the following is an example of a density-dependent factor? — Competition for resources
16. Which type of population growth occurs when resources become limited, causing the growth rate to slow down and eventually stabilize? — Logistic growth
17. What is the term for the maximum number of offspring an individual can produce in its lifetime? — Biotic potential
18. Which demographic parameter refers to the birth rate of a population? — Natality
19. The movement of individuals out of a population to another area is called: — Emigration
20. Allee effects are situations where population growth rate declines at low population densities. This can be due to: — Difficulty finding mates or reduced cooperative defense
21. What is the fundamental unit of study in population ecology? — Population
22. Which of the following is a characteristic often associated with semelparous species? — Semelparity
23. What shape does a population growth curve typically take under logistic growth conditions? — S-shaped (sigmoidal)
24. Organisms with a life history strategy characterized by early reproduction, high reproductive output, and short lifespan are often referred to as: — r-selected species
25. Which type of species typically live in fluctuating environments, are good colonizers, and have high mortality rates? — r-selected species
26. What type of population growth occurs when a population's size increases at a constant rate, assuming unlimited resources? — Exponential growth
27. Which type of population growth model assumes a constant environment and unlimited resources? — Exponential growth
28. Which equation describes the change in population size over time (dN/dt) based on birth, death, immigration, and emigration rates? — Logistic growth equation
29. When a population reaches its carrying capacity, the growth rate approaches: — Zero
30. What is the term for the death rate of a population? — Mortality
31. The movement of individuals into a population from another area is known as: — Immigration
32. Which term describes the number of individuals of a species in a given area or volume? — Population size
33. What is the spatial arrangement of individuals within a population called? — Population distribution
34. What is the maximum population size that a particular environment can sustain indefinitely, given the available resources? — Carrying capacity (K)
35. Which factor represents the average number of individuals per unit area or volume? — Population density
36. Which of the following is an example of a density-independent factor? — Natural disaster (e.g., flood)
37. Organisms with a life history strategy characterized by late reproduction, low reproductive output, and long lifespan, often living in stable environments, are known as: — K-selected species
38. Which type of species typically invest more resources in parental care and have lower mortality rates, often competing well in stable environments? — K-selected species
39. A population that is living near its carrying capacity (K) would likely exhibit: — Slow growth, intense competition, and parental care
40. What is the concept of 'semelparity' in population ecology? — Reproducing only once in a lifetime, often with a large number of offspring
41. What is the concept of 'iteroparity' in population ecology? — Reproducing multiple times throughout life, often with fewer offspring each time
42. Which of the following is a characteristic often associated with iteroparous species? — Iteroparity
43. A population that is experiencing a high intrinsic rate of increase (r) would likely exhibit: — Rapid growth and colonization of new habitats
44. What is an example of a population regulation mechanism? — Predator-prey cycles
45. What is the 'generation time' in population ecology? — The average interval between the birth of an individual and the birth of its offspring
46. What is the ultimate goal of population regulation mechanisms for a species? — To ensure long-term survival and persistence of the population
47. Which type of population distribution is characterized by individuals found in discrete groups, often due to resource availability or social interactions? — Clumped distribution
48. What type of population distribution occurs when individuals are spaced unpredictably, with no strong attractions or repulsions? — Random distribution
49. Which of the following is a density-dependent factor that can regulate population size? — Availability of nesting sites
All One Line Questions
E-Book Population ecology – growth, regulation, strategies Online Test Population ecology – growth, regulation, strategies Question Bank Population ecology – growth, regulation, strategies