Download NEET MCQs for NEET Biology: Cell Cycle and Cell Division
Access targeted multiple-choice questions for Cell Cycle and Cell Division designed to align with the latest NEET academic syllabus for NEET Biology. These objective practice sets help students evaluate their conceptual understanding and improve exam readiness.
Chapter-wise Objective Questions: Cell Cycle and Cell Division
Access the complete set of multiple-choice questions for Cell Cycle and Cell Division below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official NEET textbooks.
Multiple Choice Questions
(a) A → B → C → D → E
(b) E → D → C → B → A
(c) C → B → D → E → A
(d) C → B → E → A → D
Show Answer & Explanation
Answer: (d) C → B → E → A → D
Explanation:
1. Prophase I proceeds through leptotene, zygotene (synapsis, C), pachytene (crossing over, B), diplotene (dissociation of the synaptonemal complex, E) and diakinesis (terminalisation of chiasmata, A).
2. Disjunction of homologous chromosomes (D) occurs afterwards, in anaphase I. The sequence is C, B, E, A, D.
Teacher's Note:
1. Mnemonic: leptotene, zygotene, pachytene, diplotene, diakinesis.
2. Chiasmata are visible in diplotene and move toward the ends in diakinesis.
(a) G₂, G₁, S, M
(b) M, G₂, S, G₁
(c) G₁, S, G₂, M
(d) M, G₁, S, G₂
Show Answer & Explanation
Answer: (c) G₁, S, G₂, M
Explanation:
1. DNA stays at 2C during G₁ (A).
2. DNA doubles from 2C to 4C during the S phase (B).
3. DNA stays at 4C during G₂ (C).
4. DNA content falls back from 4C to 2C at the M phase (D), when the cell divides.
Teacher's Note:
1. S phase = DNA synthesis, so the rising part of the graph.
2. The fall in DNA content marks cell division (M).
(a) Attachment of spindle fibres to the chromosomes
(b) Reformation of the nuclear envelope
(c) Formation of the synaptonemal complex
(d) Splitting of the centromere
Show Answer & Explanation
Answer: (c) Formation of the synaptonemal complex
Explanation:
1. The synaptonemal complex forms during zygotene of prophase I of meiosis, when homologous chromosomes pair.
2. In mitosis there is no pairing of homologues; spindle attachment, nuclear envelope reformation (telophase) and centromere splitting (anaphase) all occur.
Teacher's Note:
1. Synapsis is exclusive to meiosis.
2. Mitosis is an equational division.
(a) Mitosis, Meiosis
(b) Mitosis, Amitosis
(c) Amitosis, Meiosis
(d) Meiosis, Fertilisation
Show Answer & Explanation
Answer: (d) Meiosis, Fertilisation
Explanation:
1. Meiosis halves the chromosome number and produces haploid cells (gametes or spores).
2. Fertilisation, the fusion of two haploid gametes, restores the diploid phase.
Teacher's Note:
1. Meiosis and fertilisation keep the chromosome number constant across generations.
2. Mitosis keeps the same chromosome number in daughter cells.
(a) polyploid cells
(b) polytene chromosomes
(c) lampbrush chromosomes
(d) multinucleated cells
Show Answer & Explanation
Answer: (d) multinucleated cells
Explanation:
1. Karyokinesis is the division of the nucleus and cytokinesis is the division of the cytoplasm.
2. If the cytoplasm does not divide, the daughter nuclei stay in one cell, which becomes multinucleate (as in the coenocytic endosperm of coconut).
Teacher's Note:
1. Liquid endosperm of coconut is a standard example.
2. Do not confuse this with polyploidy, which is a change in chromosome sets.
(a) G₀
(b) G₁
(c) S phase
(d) G₂
Show Answer & Explanation
Answer: (c) S phase
Explanation:
1. DNA replication happens in the S phase, so DNA polymerase is active then.
2. Histones are needed to package the new DNA, so they are also synthesised in the S phase.
Teacher's Note:
1. S phase is the synthesis phase.
2. G₁ cells are metabolically active but do not replicate DNA.
(a) 10 pg
(b) 20 pg
(c) 40 pg
(d) 5 pg
Show Answer & Explanation
Answer: (a) 10 pg
Explanation:
1. G₂ cells have already replicated their DNA (4C = 20 pg).
2. Meiosis I separates homologous chromosomes and gives two cells, each with half the DNA, so each daughter cell has 10 pg (2C).
Teacher's Note:
1. DNA content halves at meiosis I and halves again at meiosis II.
2. Each daughter cell after meiosis II would have 5 pg.
Cell Cycle and Cell Division Objective Questions & Solutions for NEET Biology
NEET Biology Cell Cycle and Cell Division Objective Test Questions
Test your conceptual understanding of Cell Cycle and Cell Division with these targeted multiple-choice questions. Designed in alignment with the latest NEET curriculum for NEET Biology, these problem sets build accuracy and prepare students for objective exams.
NCERT-Aligned Objective Questions and Solutions
Each question includes structured solution keys mapped directly to standard NEET textbooks, helping students evaluate their reasoning and correct mistakes early in their revision.
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FAQs
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