7 public questions tagged with this topic.
Emigration refers to the movement of individuals out of a population, reducing its size.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
High birth rates contribute to population growth, whereas emigration, mortality, and lack of resources lead to population decline.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Attributes - Birth Death Sex Ratio Age Distribution
If birth rate and immigration exceed death rate and emigration, the population size will increase.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Attributes - Birth Death Sex Ratio Age Distribution
Birth rate and death rate are key factors that regulate population growth and size.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Attributes - Birth Death Sex Ratio Age Distribution
Carrying capacity is not constant; it varies based on environmental conditions and resource availability.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Attributes - Birth Death Sex Ratio Age Distribution
“Decreased population size” for emigration generally results in. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Interpretation must distinguish absolute population change from a per-capita rate and must state the time interval and population boundary. Age structure, dispersal, environmental variation, and delayed responses can all make observed trajectories depart from a simple model. The remaining alternatives—“Increased population size”, “No change in population size”, “Increased genetic divers
Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology
“Emigration” for movement of individuals out of a population is termed. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Population ecology links individual births, deaths, immigration, and emigration to changes in abundance. Per-capita rates determine the direction of change, while density dependence creates feedback when crowding alters survival or reproduction. The remaining alternatives—“Immigration”, “Dispersion”, “Colonization”—refer to different states, processes, or scales and therefore do
Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology
