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Question #46609
The Question
Which of the following statements regarding the ecological dynamics and biotic interactions of alien species invasions is INCORRECT?
Options
- A.
The invasive species experiences rapid population growth primarily because the (+/-) interaction, where it serves as the prey, is absent in the new habitat.
- B.
The invasion forces native species into a severe (-/-) interaction, often resulting in the competitive exclusion of the natives from their realized niches.
- C.
Because the invasive species ultimately eliminates the native species without suffering any long-term population decline itself, their interaction is ecologically classified as Amensalism (-/0).
- D.
The introduction of the Nile perch into Lake Victoria led to the extinction of over 200 species of cichlid fish due to the disruption of the established biotic interaction matrix.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Predation (+/-)|Population Density|Functional Response
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse the 'outcome' of competition with the 'nature' of the interaction.
They assume that because the invasive species 'wins' and dominates, it is unaffected (0), while the native species is harmed (-), incorrectly classifying the interaction as Amensalism (-/0).
NCERT clearly defines competition as a (-/-) interaction where the fitness of both species is reduced in the presence of the other, regardless of who ultimately survives.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Organisms and Populations - Class 12 |
| Concept | Biotic Interactions - Positive/Negative sign matrix |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |