Question

The number of individuals of the same species that have come into a habitat from elsewhere during the time period under consideration is referred to as:

• A. Emigration
• B. Immigration
• C. Natality
• D. Mortality

Answer 1

The Correct Option is B

The concept in question pertains to population dynamics within a given habitat, particularly the movement of individuals of a species. Here are the definitions of the terms involved, which will aid in understanding the correct answer:  

1. Emigration: The process in which individuals of a species move out from a specific habitat to another, decreasing the population of the original habitat.
2. Immigration: The arrival of new individuals of a species into a habitat from elsewhere, which increases the population of the receiving habitat. This is the correct term for describing new individuals entering a habitat.
3. Natality: The birth rate of a population, indicating new individuals born within the habitat itself, contributing to population increase.
4. Mortality: The death rate within the population, contributing to population decrease.

Thus, the number of individuals of the same species that have come into a habitat from elsewhere is referred to as Immigration.

Answer 2

The number of individuals of the same species that have come into a habitat is referred to as Immigration.

Additional Context:

• Population Dynamics Terms:
  • Immigration (2): Inward movement
  • Emigration (1): Outward movement
  • Natality (3): Birth rate
  • Mortality (4): Death rate
• Ecological Impact:
  • Affects gene flow and species distribution
  • Critical for metapopulation dynamics

Correct Answer: (2) Immigration.