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Question #46649
The Question
Read the following statements regarding the ecological impact of the invasive alien weed Lantana camara on a native forest ecosystem:
I. It aggressively colonizes the shrub layer, causing severe niche overlap with native species. II. It promotes resource partitioning by forcing native shrubs to permanently alter their fundamental niche. III. The decline of native shrubs illustrates competitive exclusion due to intense interspecific competition for light and space. IV. It enhances the ecosystem's stratification efficiency by increasing the vertical segregation of the forest.
Which of the statements given above are INCORRECT?
Options
- A.
I and III
- B.
II and IV
- C.
I, II, and IV
- D.
II, III, and IV
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Optimal Foraging Theory|Detritus Food Chain Dominance|Decomposition Rate Modifiers
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse 'Fundamental Niche' with 'Realized Niche' (Connell's elegant field experiments) and mistakenly believe that adding a highly productive invasive species increases ecosystem stratification.
The trap lies in recognizing that invasive species cause niche overlap and competitive exclusion, actively destroying existing vertical stratification rather than integrating into it.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Organisms and Populations - Class 12 |
| Concept | Optimal Foraging Theory |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |