Population Ecology

What factor describes when populations increase because animals are moving into a population?

• Emigration
• Limiting Factors
• Immigration
• Exponential Growth

What factor describes when populations decrease because animals are moving out of a population?

• Emigration
• Limiting Factors
• Immigration
• Exponential Growth

What does the graph represent?

• Emigration

• Exponential growth

• Immigration

• Logistic Growth

Logistic growth has 3 phases. In Phase 1, the population grows rapidly. In Phase 2, population grows slowly. In Phase 3, growth stops. What causes growth to stop in the 3rd phase of logistic growth?

• Emigration
• Immigration
• Exponential Growth
• Carrying Capacity

Tags

NGSS.MS-LS2-4

Which limiting factor would increase due to the number of individuals in a population?

• Unusual weather
• Natural disaster
• Births
• Disease

Tags

NGSS.MS-LS2-4

Which limiting factor is independent of the number of individuals in a population?

• competition
• parasitism/disease
• stress
• natural disasters

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-5

Which of the following is NOT an outcome of high population density?

• mortality increase

• predators tend to ignore prey that is overabundant

• reduction in births

• decreased resource availability

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A population’s emigration in one month totaled 2 individuals. During the same period, immigration was 12 individuals. Natality (births) was 8, and mortality was 15 due to a parasite infection. What was the net effect on the population size?

• +5

• +3

• 0

• -4

Tags

NGSS.MS-LS2-4

What type of factor has an increasing impact as the population size increases?

• density-independent

• density-dependent

• cohort effect

• survivorship factor

Tags

NGSS.MS-LS2-4

Which of the following are density dependent factors?

• competition for resources

• predation

• disease

• natural disasters

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4