Questions on how nutrients like carbon and phosphorus cycle through ecosystems. Also covers ecological succession, including primary and secondary succession processes.
Decomposers, such as bacteria and fungi, break down dead organisms and recycle nutrients back into the ecosystem.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
High temperature and moisture enhance microbial activity, increasing the rate of decomposition.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Ecological pyramids visually represent the relative energy, biomass, or numbers at different trophic levels in an ecosystem.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Denitrification is the process in which bacteria convert nitrates back into nitrogen gas, returning it to the atmosphere.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Biological magnification occurs when toxic substances accumulate in organisms and increase in concentration at higher trophic levels.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Nutrients are not lost permanently; they are continuously recycled in ecosystems.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Plants cannot absorb atmospheric nitrogen directly; they rely on nitrogen-fixing bacteria to convert it into a usable form.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Food webs include decomposers, which play a crucial role in nutrient cycling and ecosystem balance.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Food webs include decomposers, which play a crucial role in nutrient cycling and maintaining ecosystem balance.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Decomposers break down organic matter into inorganic substances, releasing nutrients back into the environment.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
A frog is a secondary consumer because it feeds on insects, which are primary consumers.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Plants cannot absorb nitrogen gas directly from the atmosphere; they depend on nitrogen-fixing bacteria to convert it into usable forms.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
