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Question #46712
The Question
Which of the following statements regarding polyploidy and its cellular consequences is INCORRECT?
Options
- A.
It primarily arises due to the failure of cytokinesis after the telophase stage, resulting in an increase in a whole set of chromosomes.
- B.
The consequent increase in cellular dimensions significantly elevates the surface area to volume ratio, thereby enhancing the efficiency of trans-membrane exchange.
- C.
While it frequently induces phenotypic gigantism in plant systems, it typically triggers checkpoint-mediated apoptosis or senescence in most animal systems.
- D.
It represents a systemic failure of meiotic or mitotic segregation, fundamentally disrupting the established karyoplasmic index (nucleocytoplasmic ratio).
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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
Aneuploidy vs Polyploidy|Synaptonemal Complex Assembly|Cell Theory Exceptions
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often associate polyploidy in plants with 'bigger and better' traits (gigantism) and mistakenly assume that a larger cell possesses a 'larger' or 'better' surface area to volume ratio.
This traps students who fail to apply the fundamental mathematical constraint of Cell Theory: as cell size increases, the SA:V ratio strictly decreases.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Cell – The Unit of Life - Class 11 |
| Concept | Cell Theory Exceptions |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |