Class 11 · Cell Cycle and Cell Division

Nuclear Envelope Breakdown in Prophase — NEET Biology

📚 Practice Concept
📖 NCERT Source

Cells at the end of prophase, when viewed under the microscope, do not show golgi complexes, endoplasmic reticulum, nucleolus and the nuclear envelope.

NCERT Biology · Class 11 · Chapter 10 · Paragraph 18
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QuestionPractice Question

Which of the following statements about the events occurring during prophase of mitosis is NOT correct?

📖 Solution & NCERT Explanation
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Correct answer: C Nuclear envelope, nucleolus, and Golgi complex remain distinctly visible throughout prophase.

The core concept tested here is the characteristic events of prophase in mitosis. Statement A is correct as prophase is marked by the initiation of condensation of chromosomal material. Statement B is correct as the duplicated centrosome moves towards opposite poles during prophase. Statement D is also correct as centrosomes radiate asters which, along with spindle fibres, form the mitotic apparatus. Statement C is incorrect because, as per NCERT, cells at the end of prophase, when viewed under the microscope, do not show Golgi complexes, endoplasmic reticulum, nucleolus, and the nuclear envelope; these structures disappear. Therefore, they do not remain distinctly visible throughout prophase.

❓ Frequently Asked Questions
What does NCERT say about Cells at end prophase?
Cells at the end of prophase, when viewed under the microscope, do not show golgi complexes, endoplasmic reticulum, nucleolus and the nuclear envelope.
Has this concept appeared in NEET?
Practice this NCERT concept with questions on MedicNEET.
Which chapter is this from?
Cell Cycle and Cell Division, Class 11 NCERT Biology.

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