Here, you will get Class 11 Biology MCQ of Chapter 10 Cell Cycle And Cell Division for cracking NEET/AIIMS. By solving these MCQs of Class 11 Biology Chapter 10 Cell Cycle And Cell Division, you will get the confidence to crack NEET. Practice MCQ Questions for Class 11 Biology with Answers on a daily basis and score well in exams.
Cell Cycle And Cell Division Class 11 MCQs Questions with Answers
Golgi complex and endoplasmic reticulum cannot be seen during
(a) late telophase
(b) late prophase
(c) early anaphase
(d) late metaphase
Answer: (b) late prophase
Astral body are formed of
(a) Microtubules
(b) Intermediate filaments
(c) Microfilaments
(d) Microvilli
Answer: (a) Microtubules
Choose the correct sequence. A. Chromatin condensation B. Protein synthesis C. Duplication of centrioles D. Centrioles moves towards opposite poles
(a) C, A, B, D
(b) C, B, A, D
(c) C, D, B, A
(d) A, C, D, B
Answer: (b) C, B, A, D
If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into
(a) Prophase
(b) Anaphase
(c) Telophase
(d) Metaphase
Answer: (d) Metaphase
Which of the following is true of kineto-chores?
(a) They are organized so that there is one per sister chromatid in meiosis
(b) They are localized at the centromere of each chromosome
(c) They are the sites where microtubules attach to separate the chromosomes.
(d) All of the above
Answer: (d) All of the above
During which stages (or prophase I substages) of meiosis do you expect to find the bivalents and DNA replication respectively?
(a) Zygotene and S phase (of interphase prior to prophase I)
(b) Both
(c) Pachytene and interphase (just prior to prophase I)
(d) None of these
Answer: (a) Zygotene and S phase (of interphase prior to prophase I)
The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is
(a) splitting of the centromeres
(b) splitting of the chromatids
(c) replication of the genetic material
(d) condensation of the chromatin
Answer: (a) splitting of the centromeres
Arrange the following events of meiosis in the correct sequence: I. Terminalization II. Crossing over III. Synapsis IV. Disjunction of genomes The correct sequence is
(a) II, I, IV, III
(b) III, II, I, IV
(c) IV, III, II, I
(d) I, IV, III, II
Answer: (b) III, II, I, IV
What type of plant is formed when colchicine is used in the process of development of Raphanobrassica?
(a) Autotetraploid
(b) Haploid
(c) Triploid
(d) Allotetraploid
Answer: (d) Allotetraploid
Meiosis occurs for the human female in
(a) Pancreas
(b) Liver
(c) Ovary
(d) Kidney
Answer: (c) Ovary
How many chromosomes are there in onion root tip cell?
(a) 06
(b) 16
(c) 26
(d) 36
Answer: (b) 16
The number of chromatids in a chromosome at anaphase is
(a) 1 in mitosis and 2 in meiosis
(b) 2 each in mitosis and meiosis
(c) 2 in mitosis and 4 in meiosis
(d) 2 in mitosis and 1 in meiosis
Answer: (a) 1 in mitosis and 2 in meiosis
Four daughter cells formed after meiosis are
(a) genetically different
(b) multinucleate
(c) genetically similar
(d) anucleate
Answer: (a) genetically different
In which stage of the cell cycle histone proteins synthesized in a eukaryotic cell?
(a) During S-phase
(b) During entire prophase
(c) During telophase
(d) During G2 stage of prophase
Answer: (a) During S-phase
Choose the correct sequence. A. Pachytene B. Zygotene C. Leptotene D. Diakinesis E. Diplotene
(a) C, B, A, D, E
(b) C, A, B, E, D
(c) C, B, A, E, D
(d) D, B, C, E, A
Answer: (c) C, B, A, E, D
Cell division is initiated in plants by
(a) Cytokinin
(b) Abscisic acid
(c) Gibberellin
(d) Auxin
Answer: (a) Cytokinin
Which of the events listed below is not observed during mitosis?
(a) Chromatin condensation
(b) Movement of centrioles to opposite poles
(c) The appearance of chromosomes with two chromatids joined together at the centromere.
(d) Crossing over
Answer: (d) Crossing over
Lampbrush chromosomes are observed in
(a) Mitotic prophase
(b) Mitotic metaphase
(c) Meiotic metaphase
(d) Meiotic prophase
Answer: (d) Meiotic prophase
Synaptonemal complex dissolves in _____ stage.
(a) Zygotene
(b) Pachytene
(c) Diakinesis
(d) Diplotene
Answer: (d) Diplotene
Centromere is a constituent of
(a) Ribosome
(b) ER
(c) Chromosome
(d) Mitochondrion
Answer: (c) Chromosome
Which of the following cellular structures always disappears during mitosis and meiosis?
(a) Plasma membrane
(b) Nucleolus and nuclear envelope
(c) Plastids
(d) none of these
Answer: (b) Nucleolus and nuclear envelope
Recombination of genes occur at
(a) prophase I in meiosis
(b) prophase II in meiosis
(c) metaphase II in meiosis
(d) prophase in mitosis
Answer: (a) prophase I in meiosis
During which stage the chromosomes first become visible?
(a) Anaphase
(b) Metaphase
(c) Prophase
(d) Telophase
Answer: (c) Prophase
Karyokinesis is the term used for
(a) division of cytoplasm
(b) division of nucleoplasm
(c) division of nucleus
(d) separation of daughter chromosomes
Answer: (d) separation of daughter chromosomes
The S phase marks the period during which replication of DNA takes place. It is during this time that the content of DNA doubles, from
(a) 2C to 4C
(b) 4C to 2C
(c) (1n or 2n)
(d) (2n or 1n)
Answer: (a) 2C to 4C
Yeast cell can progress through all the four stages of the cell cycle in only about
(a) 60 minutes
(b) 90 minutes
(c) 30 minutes
(d) 45 minutes
Answer: (b) 90 minutes
The stage between two meiotic divisions is called interkinesis and
(a) Is generally short lived and followed by prophase II
(b) Involves duplication of genes and centrioles
(c) Is followed by prophase I
(d) Is long lived
Answer: (a) Is generally short lived and followed by prophase II
Which of the following is true of kineto-chores?
(a) They are organized so that there is one per sister chromatid in meiosis
(b) They are localized at the centromere of each chromosome
(c) They are the sites where microtubules attach to separate the chromosomes.
(d) All of the above
Answer: (d) All of the above
Hammerling’s experiments of Acetabularia involved exchanging
(a) cytoplasm
(b) nucleus
(c) rhizoid and stalk
(d) gametes
Answer: (b) nucleus
Cell plate grows from
(a) walls to the centre
(b) centre to the walls
(c) in patches
(d) simultaneously
Answer: (b) centre to the walls
In mitosis, nuclear envelope and nucleolus disappear during
(a) Metaphase
(b) Interphase
(c) Prophase
(d) Telophase
Answer: (c) Prophase
What is true about telophase stage?
(a) All of these
(b) Nuclear envelope, nucleolus, Golgi complex and ER reform
(c) Chromosomes cluster at opposite spindle poles
(d) Chromosomes lose their identity as discrete elements
Answer: (a) All of these
The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is
(a) splitting of the centromeres
(b) splitting of the chromatids
(c) replication of the genetic material
(d) condensation of the chromatin
Answer: (a) splitting of the centromeres
Balbiani rings (puffs) are sites of
(a) DNA replication
(b) RNA and protein synthesis
(c) synthesis of polysaccharides
(d) synthesis of lipids
Answer: (b) RNA and protein synthesis
Crossing over in diploid organism is responsible for
(a) dominance of genes
(b) linkage between genes
(c) segregation of alleles
(d) recombination of linked alleles
Answer: (d) recombination of linked alleles
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