Examine how life history traits and interactions between populations shape ecological communities and survival strategies.
K-selected species produce fewer offspring, invest in parental care, and have longer lifespans.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
Mutations introduce new genetic variations, increasing the genetic diversity of a population.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
Ecological resilience refers to an ecosystem's ability to recover from disturbances and maintain its functions.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
A stable population has balanced birth and death rates, leading to minimal overall population change.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
The ecological footprint quantifies resource use, including land, energy, water, and waste production.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
Clumped dispersion is the most common pattern in nature, as individuals often aggregate in patches due to resource availability or social behavior.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
K-selected species have slow growth, invest in parental care, and maintain stable population sizes.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
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
Secondary succession occurs in areas where life existed before but was disturbed, such as after a forest fire.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
r-selected species, like bacteria, reproduce rapidly with minimal parental care.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
Predators depend on prey for food, so their population size is limited by the availability of prey.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
Phosphorus is released into ecosystems through rock weathering and is a key nutrient for biological processes.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Life History Variations and Population Interactions - Overview
