Explore how predation and herbivory influence population sizes, community structure, and evolutionary adaptations.
Directional selection favors traits that improve survival, such as camouflage, which helps organisms avoid predation.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
In predation, the predator benefits while the prey is harmed or killed.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Natural disasters affect populations regardless of their density, making them density-independent factors.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Natural disasters like floods and earthquakes affect populations regardless of their density, making them density-independent factors.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Carrying capacity is determined by multiple factors, including food availability, climate, and predation pressure.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Species with a Type II survivorship curve, such as birds, experience a constant mortality rate at all life stages.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Invasive species can significantly disrupt ecosystems by altering food webs, reducing biodiversity, and competing with native species.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Mimicry occurs when an organism resembles another object or species to avoid predation, as in the case of a moth resembling a dead leaf.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Competition occurs when two species compete for limited resources, negatively affecting both species.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Age structure determines the proportion of individuals capable of reproduction, influencing population growth rate.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Birth rates are influenced by resource availability, as sufficient food and shelter support higher reproduction.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
Batesian mimicry occurs when a harmless species mimics a harmful one to avoid predation.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Predation and Herbivory
