25 public questions tagged with this topic.
Biodiversity contributes to ecosystem productivity and stability. Habitat loss and fragmentation, overexploitation, alien species invasions, and co-extinctions are the major causes of biodiversity loss described in NCERT.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Causes - Habitat Loss Overexploitation
Biodiversity provides ecosystem services such as climate regulation, maintenance of soil fertility, pollination, nutrient cycling, and seed dispersal.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Alexander von Humboldt showed that species richness increases with explored area, and on a logarithmic scale the relationship becomes a straight line (log S = log C + Z log A).
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Insects constitute more than 70% of all described animal species and represent the largest group of animals.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Alexander von Humboldt observed that within a region, species richness increases with increasing explored area, but only up to a limit.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Alexander von Humboldt described the species-area relationship, where species richness increases with area but only up to a certain limit.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
For most groups of organisms, the slope (Z) of the species-area relationship lies between 0.1 and 0.2.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
When plotted on a logarithmic scale, the species-area relationship becomes a straight line represented by log S = log C + Z log A.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
NCERT states that fungi comprise more species than the combined total of fishes, amphibians, reptiles, and mammals.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
NCERT attributes the high biodiversity of tropical regions to their long evolutionary history, relatively undisturbed and stable environment, and greater availability of solar energy.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Patterns of Biodiversity - Latitudinal Gradients
Plants account for about 22% of all described species, whereas animals constitute more than 70%.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Patterns of Biodiversity - Latitudinal Gradients
NCERT attributes the high biodiversity of tropical regions to their long evolutionary history, relatively stable climate, and greater availability of solar energy.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Patterns of Biodiversity - Latitudinal Gradients
