This category covers how different species interact through parasitism and commensalism, including the effects on population dynamics and ecosystem balance.
An ecological niche refers to an organismâs functional role, interactions, and resource utilization in an ecosystem.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Commensalism is a relationship where one species benefits while the other is neither harmed nor helped.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Parasitism benefits the parasite while harming the host by deriving nutrients or resources.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Parasitism, like predation, benefits one species while harming the other, but parasites do not immediately kill their host.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
In commensalism, one species benefits while the other is neither harmed nor helped.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Competition negatively affects both species as they compete for the same limited resources.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Type III survivorship curves are seen in species like frogs, which produce many offspring with high mortality at early stages.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Primary succession occurs in areas where there was no previous life, such as a newly formed volcanic island.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Commensalism is an interaction where one species benefits while the other remains unaffected.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Semelparity is a reproductive strategy where organisms reproduce once before dying, as seen in certain insects and salmon.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Brood parasitism occurs when a species, such as a cuckoo, lays its eggs in the nest of another species, relying on them to raise its young.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Brood parasitism occurs when one species lays its eggs in another speciesâ nest, such as cuckoos laying eggs in crow nests.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
