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Question #46263
The Question
An ecosystem experiences a sudden, intense surge in ovary-boring herbivorous insects. A structural evolutionary bottleneck favors plant species whose gynoecium architecture provides centralized protection to ovules within a multilocular ovary, rather than having ovules developing on the inner peripheral wall of a unilocular ovary. Based on this selective pressure, which of the following pairs correctly identifies a plant that would be MOST VULNERABLE to this herbivory, and a plant that would possess a SELECTIVE ADVANTAGE, respectively?
Options
- A.
Argemone and Tomato
- B.
China rose and Mustard
- C.
Dianthus and Lemon
- D.
Pea and Primrose
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
Gynoecium Placentation|Biotic Interactions|Evolutionary Adaptation
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: The student must first translate ecological descriptions into standard NCERT morphological terms (Parietal vs.
Axile placentation) by visualizing the 3D cross-section of the ovary, and then map those terms to specific NCERT plant examples.
The primary trap is Option B, which tests 'Sequence/Order' by providing the correct plant types but in the reverse order of the prompt's requirement.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Morphology of Flowering Plants - Class 11 |
| Concept | Gynoecium Placentation |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |