NEET-UG importance
Mitosis and meiosis is a useful scoring area because questions often test direct NCERT wording, process sequence, and the ability to separate close distractors. Keep the revision tight and practice with explanations after each attempt.
How to practice this topic
Read the NCERT section first, mark definitions and examples, then solve MCQs in short sets. After each wrong answer, rewrite the reason in one line so the concept becomes recallable before a mock test.
Core concepts to revise
- Revise the NCERT definitions first, then solve short concept-check MCQs.
- Mark examples and exceptions because NEET Biology questions often test exact wording.
- Review every wrong option after practice so close distractors become easier to eliminate.
Common NEET traps
- Do not rely on memorized keywords without checking the full statement.
- Separate NCERT-level facts from advanced details that are not needed for NEET-UG.
Example MCQs and explanations
The mechanism for chromosomal aneuploidy could be
Answer: D. chromosome non-separation or loss
Chromosome non-separation or loss can lead to aneuploidy, which is a condition where there are abnormal numbers of chromosomes in cells. This can occur during cell division if the chromosomes fail to separate properly.
Practice this MCQWhich of the following cellular structures are involved in the formation of the mitotic apparatus?
Answer: C. centrioles
Centrioles play a crucial role in the formation of the mitotic spindle, which is part of the mitotic apparatus. Nuclear lamina and nucleoskeleton are involved in nuclear structure but not directly in forming the mitotic apparatus. Kinetochores attach chromosomes to microtubules of the spindle.
Practice this MCQMitosis occurs during which phase of the cell cycle?
Answer: D. M phase
Mitosis is a part of the M (mitotic) phase of the cell cycle, where cell division actually takes place.
Practice this MCQThe two meiotic divisions of oogonia occur respectively in
Answer: B. before ovulation and after fertilization
Oogonia undergo the first meiotic division before ovulation, and complete the second meiotic division after fertilization.
Practice this MCQIn which phase of meiosis is the mammalian egg cell during fertilization?
Answer: D. prophase of the second meiotic division
The mammalian egg cell is typically in the prophase of the second meiotic division during fertilization.
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