MHT CET 202622 AprilMorning Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 22 April
- Shift
- Morning Shift
- Subject
- Biology
- Chapter
- Biodiversity and its Conservation
MHT CET 2026 · 22 April · Morning Shift · Biology · Biodiversity and its Conservation
The introduction of African catfish ( Clarias gariepinus ) for...
The introduction of African catfish (Clarias gariepinus) for aquaculture purposes has proved harmful to endemic catfish varieties mainly because African catfish ____.
Options
- Ais bigger in size.
- Bmultiply fast
- Cconsumes all the food.
- Dhas no local predators.
Correct answer
D. has no local predators.
Step-by-step solution
When an exotic or alien species is introduced into a new geographical area, it often becomes invasive and spreads rapidly, causing a decline in the population of indigenous species.
This rapid spread and dominance occur primarily because the invaded ecosystem lacks the natural predators that would otherwise keep the exotic species' population under control.
The African catfish (Clarias gariepinus) was introduced illegally for aquaculture purposes and became a major threat to the endemic catfish varieties in Indian rivers because it has no local predators, allowing it to multiply unchecked and outcompete native species for resources.
Answer: has no local predators.
This rapid spread and dominance occur primarily because the invaded ecosystem lacks the natural predators that would otherwise keep the exotic species' population under control.
The African catfish (Clarias gariepinus) was introduced illegally for aquaculture purposes and became a major threat to the endemic catfish varieties in Indian rivers because it has no local predators, allowing it to multiply unchecked and outcompete native species for resources.
Answer: has no local predators.