Significance of Mitosis — NEET Biology MCQs with Solutions
Free NEET Biology Significance of Mitosis MCQs with step-by-step solutions (6 questions). Part of Cell Cycle and Cell Division. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Significance of Mitosis · easy · theory
Mitosis is also called ______ division because the daughter cells have the same chromosome number as the parent:
A. Equational ✓ Correct
B. Meiotic
C. Amitotic
D. Reductional
Solution: Mitosis is equational — chromosome number is conserved (2n → 2n).
Q2 — Significance of Mitosis · easy · theory
In multicellular organisms, mitosis is essential for:
A. Formation of gametes
B. Genetic recombination
C. Reduction of chromosome number
D. Growth and repair (replacement of cells) ✓ Correct
Solution: Mitosis produces genetically identical cells for growth, repair and, in some organisms, asexual reproduction.
Q3 — Significance of Mitosis · medium · theory
Mitosis maintains genetic constancy across cell generations because:
A. Cells fuse
B. Chromosome number is halved
C. Crossing over shuffles genes
D. Each daughter cell receives an identical set of chromosomes ✓ Correct
Solution: Exact DNA replication + equal distribution keeps the chromosome number and genotype constant.
Q4 — Significance of Mitosis · medium · theory
In plants, continuous mitotic divisions in ______ account for growth throughout life:
A. Meristematic tissues ✓ Correct
B. Xylem vessels
C. Phloem
D. Cork
Solution: Apical and lateral meristems keep dividing (mitosis), enabling indeterminate plant growth.
Q5 — Significance of Mitosis · hard · theory
Restoration of the nucleo-cytoplasmic ratio is a significance of mitosis because:
A. Cells never divide
B. A growing cell divides to keep its cytoplasm proportional to its nuclear (DNA) content ✓ Correct
C. The nucleus enlarges indefinitely
D. DNA content increases without limit
Solution: As a cell grows the nucleus can control only a limited cytoplasm; mitosis restores an efficient nucleo-cytoplasmic ratio.
Q6 — Significance of Mitosis · hard · theory
Mitosis, being equational, cannot by itself introduce ______, which is essential for evolution:
A. Cell repair
B. DNA replication
C. Growth
D. Genetic variation ✓ Correct
Solution: Mitosis produces genetically identical cells and does not generate variation; meiosis and sexual reproduction do.