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Question #46209
The Question
During severe environmental desiccation, certain snail species enter aestivation to avoid summer-related problems, while zooplankton enter diapause. A terrestrial angiosperm facing similar severe water deficit cannot relocate, but instead undergoes systemic physiological and structural modifications. Which of the following statements regarding the plant's adaptive response is INCORRECT?
Options
- A.
Accumulation of Abscisic acid (ABA) stimulates the closure of stomata in the epidermis, reducing transpirational loss to maintain homeostasis.
- B.
The plant exhibits a differential growth response where ABA maintains primary root elongation while inhibiting shoot growth to optimize water acquisition.
- C.
High levels of Cytokinins are synthesized in the root apical meristem to induce deep metabolic dormancy, functionally mirroring diapause in zooplankton.
- D.
The stress hormone induces seed dormancy, serving as an 'escape in time' strategy that is ecologically analogous to aestivation in snails.
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
Root System Architecture|Diapause vs Hibernation vs Aestivation|Organisms and Populations
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Functional Overlap & Hormone Antagonism.
Students often assume 'stress' causes a systemic shutdown of all plant parts, mirroring animal hibernation.
However, plants exhibit a differential response: shoots arrest growth while roots actively elongate.
Furthermore, students must distinguish between the stress-inducing hormone (ABA) and the growth-promoting hormone (Cytokinin), which are antagonistic.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Morphology of Flowering Plants - Class 11 |
| Concept | Root System Architecture |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |