20 public questions tagged with this topic.
The NCERT textbook recognizes 34 biodiversity hotspots worldwide, four of which include regions of India.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Biodiversity Conservation - In situ Ex situ Hotspots
Co-extinction occurs when the extinction of one species leads to the extinction of another species that is closely associated with it, such as a host and its parasite or a plant and its pollinator.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Alien Invasion Co-extinction Mass Extinction - Evil Quartet
According to NCERT, alien species invasions are one of the major causes of biodiversity loss because invasive species can eliminate native species.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Alien Invasion Co-extinction Mass Extinction - Evil Quartet
The IUCN Red List includes plants, animals, fungi, and other organisms and classifies them according to their extinction risk.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Alien Invasion Co-extinction Mass Extinction - Evil Quartet
NCERT recognizes narrowly utilitarian, broadly utilitarian, and ethical values as reasons for conserving biodiversity. Monetary inflation is unrelated.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Alien Invasion Co-extinction Mass Extinction - Evil Quartet
Narrowly utilitarian values include direct benefits such as food, fuel, fibre, medicines, and industrial products obtained from biodiversity.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Alien Invasion Co-extinction Mass Extinction - Evil Quartet
India occupies about 2.4% of the world's land area but harbours about 8.1% of the world's recorded species.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Alien Invasion Co-extinction Mass Extinction - Evil Quartet
Human activities have accelerated extinction rates to about 100–1000 times the natural background rate.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Causes - Habitat Loss Overexploitation
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
Pollination is a beneficial ecosystem service. The major causes of biodiversity loss are habitat loss and fragmentation, overexploitation, alien species invasions, and co-extinctions.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Causes - Habitat Loss Overexploitation
Biodiversity hotspots are regions rich in endemic species that are under constant threat from habitat loss and therefore require priority conservation.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Causes - Habitat Loss Overexploitation
NCERT cites the Passenger pigeon as an example of extinction caused by overexploitation by humans.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Causes - Habitat Loss Overexploitation
