455 public questions tagged with this topic.
Species richness is highest in the tropics and generally decreases towards the poles.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Patterns of Biodiversity - Latitudinal Gradients
Insects constitute more than 70% of all described animal species.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Patterns of Biodiversity - Latitudinal Gradients
Species richness is highest in tropical regions because they have experienced long evolutionary periods under relatively stable environmental conditions.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Patterns of Biodiversity - Latitudinal Gradients
Species richness is highest in tropical regions and decreases towards the poles. It is not uniform across all regions.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Patterns of Biodiversity - Latitudinal Gradients
Ecosystem services include pollination, nutrient cycling, climate regulation, soil formation, and many other benefits essential for human well-being.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Patterns of Biodiversity - Latitudinal Gradients
In aquatic ecosystems, the pyramid of biomass is often inverted because the biomass of producers (phytoplankton) is smaller than that of consumers.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Ecological Pyramids - Number Biomass Energy
In a forest ecosystem, a few large trees (producers) support a larger number of herbivores, causing an inverted pyramid of number.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Ecological Pyramids - Number Biomass Energy
Population density is influenced by natality (birth rate), mortality (death rate), immigration (arrival), and emigration (departure).
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Attributes - Birth Death Sex Ratio Age Distribution
A bell-shaped age pyramid represents a stable population with nearly equal birth and death rates.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Attributes - Birth Death Sex Ratio Age Distribution
Population density refers to the number of individuals in a specific area or volume, reflecting the population size in a habitat.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Attributes - Birth Death Sex Ratio Age Distribution
Tertiary consumers do not feed directly on producers; they obtain energy from primary and secondary consumers.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Adaptations - Morphological Physiological Behavioural
Climate variability, such as droughts or temperature changes, can lead to fluctuations in population size.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Adaptations - Morphological Physiological Behavioural
