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Question #45347
The Question
Intracytoplasmic Sperm Injection (ICSI) is a specialized ART procedure that mechanically bypasses several natural fertilization checkpoints. Which of the following statements regarding the cellular events and physiological consequences of ICSI is INCORRECT?
Options
- A.
The female gamete subjected to the microinjection is a secondary oocyte arrested at Metaphase II.
- B.
The procedure bypasses the acrosome reaction and the natural selection pressure normally exerted by the zona pellucida.
- C.
The direct deposition of the sperm into the ooplasm bypasses the completion of Meiosis II, allowing immediate syngamy with the arrested oocyte.
- D.
The chronological requirement of sperm capacitation in the female reproductive tract is rendered unnecessary.
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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
Spermatogenesis vs. Oogenesis Chronology|ICSI Procedure
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse the mechanical bypass of physical barriers (zona pellucida, acrosome reaction) with the physiological requirements of gametogenesis.
The trap assumes that once the sperm is inside the cytoplasm, fertilization is instantly complete, ignoring the core NCERT fact that sperm entry is strictly required to induce the completion of Meiosis II before syngamy can occur.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Human Reproduction - Class 12 |
| Concept | Spermatogenesis vs. Oogenesis Chronology |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |