NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Biology
- Chapter
- Chapter
NEET 2026 · Biology · Chapter
The 'Evil Quartet' describes the four major causes of biodiversity...
The 'Evil Quartet' describes the four major causes of biodiversity loss. Which of the following examples is incorrectly matched with its corresponding cause?
Options
- AExtinction of Steller's sea cow and passenger pigeon – Over-exploitation
- BEnvironmental damage caused by Parthenium and Eichhornia – Alien species invasion
- CExtinction of a host fish species leading to the extinction of its unique parasites – Co-extinctions
- DExtinction of more than 200 species of cichlid fish in Lake Victoria – Habitat loss and fragmentation
Correct answer
D. Extinction of more than 200 species of cichlid fish in Lake Victoria – Habitat loss and fragmentation
Step-by-step solution
The 'Evil Quartet' refers to the four major causes of biodiversity loss: habitat loss and fragmentation, over-exploitation, alien species invasions, and co-extinctions.
Extinction of Steller's sea cow and passenger pigeon is due to over-exploitation by humans.
Environmental damage and threat to native species by invasive weeds like Parthenium, Lantana, and Eichhornia are examples of alien species invasion.
Extinction of a host fish species leading to the extinction of its unique parasites is an example of co-extinction.
The extinction of more than 200 species of cichlid fish in Lake Victoria was caused by the introduction of the Nile perch, which is an example of alien species invasion, not habitat loss and fragmentation. Therefore, this match is incorrect.
Answer: Extinction of more than 200 species of cichlid fish in Lake Victoria – Habitat loss and fragmentation
Extinction of Steller's sea cow and passenger pigeon is due to over-exploitation by humans.
Environmental damage and threat to native species by invasive weeds like Parthenium, Lantana, and Eichhornia are examples of alien species invasion.
Extinction of a host fish species leading to the extinction of its unique parasites is an example of co-extinction.
The extinction of more than 200 species of cichlid fish in Lake Victoria was caused by the introduction of the Nile perch, which is an example of alien species invasion, not habitat loss and fragmentation. Therefore, this match is incorrect.
Answer: Extinction of more than 200 species of cichlid fish in Lake Victoria – Habitat loss and fragmentation