Advertisements
Advertisements
प्रश्न
What are the major causes of species losses in a geographical region?
Advertisements
उत्तर
The major causes of species losses (also known as ‘The Evil Quartet’) are as follows:
- Habitat Loss and Fragmentation: Destruction of natural homes due to human activities (e.g., cutting forests).
- Over-exploitation: When human need turns into greed, leading to over-use of resources.
- Alien species invasions: Introduction of non-native species that threaten local species.
- Co-extinctions: Extinction of a species leading to the extinction of other species dependent on it.
संबंधित प्रश्न
Enlist any six categories into which a given species is placed once it has been thoroughly evaluated by IUCN.
Species that possess a high risk of extinction with very few surviving members (50) are categorised as ____________ by the IUCN.
Which among the following is a TRUE statement?
Currently, ______ mass extinction is considered to be the progressing at an alarming rate due to the loss of biodiversity.
Which among the following is an exception to invasive species?
Which one of the following is a natural cause of extinction of flora and fauna?
What do you understand by ‘exotic species’?
What are the major factors that are responsible for the loss of biodiversity? What steps are needed to prevent them?
Which of the following statements is correct?
IUCN means
What does 'Red' indicate in the IUCN Red list (2004)?
What is common to the species shown in figures A and B?
 |
 |
| A | B |
What is common to the species shown in figures A and B?
 |
 |
| A | B |
List any two major causes other than anthropogenic causes of the loss of biodiversity.
How many Biodiversity hotspots have been identified around the world?
"Forests provide intangible benefits to us." Explain by taking three different areas, how.
What is the sustainable use of resources?
Consider the following statements:
- Statement I: Endemism and accelerated habitat loss are characteristics of biodiversity hotspots.
- Statement II: Gene bank is an in-situ method of biodiversity conservation.
Choose the correct answer from the options given below.
When a species goes extinct in one area, it is often desirable to re-introduce the species from other populations. A major problem with this approach is that ______.
Mention any two places where the ex-situ conservation is undertaken.
Which one of the following is a pair of endangered species?
Red Data Book is maintained by ______.
Give definitions of Invasive species.
Which type of extinction is characterised by species disappearing through natural environmental changes or evolutionary processes over a slow, long-term period?
Which IUCN category describes species facing an 'extremely high risk of extinction in the immediate future'?
Over-exploitation as a cause of biodiversity loss is best exemplified by which of the following?
