NEET-UG Biology · Class 11
Significance of mitosis and meiosis — NEET & JEE Questions
Significance of mitosis and meiosis is a topic in Cell Cycle and Cell Division, a Class 11 Biology chapter of the NEET-UG syllabus. TestBudy holds 12 published NEET-UG questions on Significance of mitosis and meiosis, each with the marking scheme of the real paper.
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Significance of mitosis and meiosis MCQs with solutions
10 of the 12 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
Mitosis generally produces daughter cells with
- A. the same chromosome number as the parent cell
- B. half the chromosome number
- C. double the chromosome number
- D. no chromosomes
Which role of mitosis is most important for maintaining chromosome number during growth in a multicellular organism?
- A. It halves the chromosome number in daughter cells
- B. It produces genetically similar daughter cells with the same chromosome number
- C. It causes crossing over between homologous chromosomes
- D. It produces gametes directly in all organisms
A major significance of mitosis in multicellular organisms is
- A. growth and tissue repair
- B. production of haploid gametes only
- C. reduction of chromosome number
- D. generation of crossing over
A major significance of meiosis is that it
- A. reduces chromosome number and promotes genetic variation
- B. produces identical diploid cells only
- C. prevents recombination
- D. doubles chromosome number in gametes
Why is mitosis essential for wound healing?
- A. It produces new somatic cells to replace damaged cells
- B. It halves chromosome number at the wound
- C. It creates gametes at the injury site
- D. It removes all DNA from cells
Why is meiosis necessary in sexually reproducing diploid organisms?
- A. It produces haploid gametes so fertilisation restores rather than doubles chromosome number each generation
- B. It produces diploid gametes
- C. It prevents genetic variation
- D. It replaces all body cells
Which process contributes directly to genetic variation during meiosis?
- A. Crossing over
- B. DNA replication alone
- C. Cytokinesis only
- D. Mitosis of somatic cells
An organism grows from a zygote into a multicellular adult mainly through repeated
- A. mitotic divisions
- B. meiotic divisions
- C. fertilisations
- D. crossing-over events
A species reproduces sexually and must both maintain its chromosome number across generations and generate genetic variation. Which two features of meiosis contribute most directly to these outcomes?
- A. Chromosome doubling and mitotic cytokinesis
- B. Reduction division and recombination
- C. DNA replication twice and no chromosome separation
- D. Equal division and absence of synapsis
If meiosis failed to reduce chromosome number before fertilisation, what long-term problem would arise?
- A. Chromosome number would tend to double in successive generations
- B. Chromosome number would remain perfectly constant
- C. No zygotes could ever form
- D. All offspring would be haploid
Common mistakes in Significance of mitosis and meiosis
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Swaps the major roles of mitosis and meiosis.
- Assumes every meiotic function fails if crossing over is lost.
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