Examines how organisms interact with and adapt to different biomes and abiotic environmental factors.
Photosynthesis removes carbon dioxide from the atmosphere, while respiration releases it back, driving the carbon cycle.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Predation is a biotic factor as it involves interactions between living organisms, while temperature, water, and soil are abiotic factors.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Population ecology focuses on how populations interact with their environment, including factors affecting population size and distribution.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Primary productivity is highest in areas with ample sunlight and nutrients, such as tropical rainforests and shallow ocean waters, not deep ocean zones.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Cryptic coloration allows an organism to blend into its environment, such as a leaf insect resembling a leaf.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
A keystone species plays a critical role in maintaining ecosystem balance, even if it is not the most abundant.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Invasive species can outcompete native species, leading to reduced biodiversity and ecosystem imbalance.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Population ecology studies how populations interact with both biotic (living) and abiotic (non-living) environmental factors.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Disease is a density-dependent factor because its spread increases with population density.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Invasive species can outcompete native species, reducing biodiversity and altering ecosystem balance.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Primary succession is slower because it starts on bare surfaces, requiring soil formation before larger plants can establish.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Groundwater movement is an important part of the water cycle, influencing water availability in ecosystems.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
