NEET Biology Cell Cycle and Cell Division MCQs Set B

Question: How many generations are required by a cell of meristem to produce 128 cells?
(a) 7
(b) 32
(c) 64
(d) 127
Answer: A

Question: Select the correct match
a) Reformation of ER and golgi complex – Telophase
b) Polar movement of chromatids – S-phase
c) Invisible phase of cell cycle – Metaphase
d) Recombination nodules formation – Zygotene
Answer: A

Question: Phragmoplast is formed by golgi complex and grows
a) Centrifugally to form cell plate
b) Centrifugally to form a cleavage furrow
c) Centripetally to form cell plate
d) Centripetally to produce a cleavage furrow
Answer: A

Question: Spireme stage of chromosomes is associated with
a) Early prophase
b) Late prophase
c) Metaphase
d) Telophase
Answer: A

Question: Which one of the following is correct for mitosis in most of the plants member?
a) Anastral, acentric and eumitosis
b) Amphiastral, anastral and eumitosis
c) Anastral, acentric and premitosis
d) Astral, centric and eumitosis
Answer: A

Question: Spindle fibres are made up of
a) Alpha & beta tubulin
b) Flagellin
c) Myosin
d) Actin
Answer: A

Question: Cytokinesis in a plant cell is achieved by the formation of cell plate instead of a cleavage furrow, which is formed in
a) Centrifugal manner
b) Equational manner
c) Centripetal manner
d) Both centripetal and centrifugal manner
Answer: A

Question: Select an incorrect statement w.r.t. metaphase
a) The plane of alignment of the homologous pair of chromosomes at metaphase is referred to as the metaphasic plate
b) Spindle fibres are attached to small disc shaped structures at the surface of centromeres called kinetochores
c) Chromosome appears to be made up of two sister chromatids
d) The size of chromosomes can be studied in this phase
Answer: A

Question: All are the essential stages that take place during meiosis, except
a) Number of chromosomes in daughter cells after meiosis II is reduced to half but the amount of DNA remains the same
b) Segregation of homologous chromosomes
c) Formation of chiasmata and crossing over
d) Two successive divisions without any DNA replication occuring between them
Answer: A

Question: Two successive divisions without any DNA replication occuring between them
a) First division is reductional, and second is equational
b) First division is equational, second is reductional
c) Both divisions are reductional
d) Both divisions are equational
Answer: A

Question: If egg of an organism has 10 Pg of DNA in its nucleus. How much DNA would a diploid cell of same organism have in G2 phase of meiosis?
a) 40 Pg
b) 20 Pg
c) 5 Pg
d) 10 Pg
Answer: A

Question: To produce 102 pollen grains, how many meiotic divisions are required?
a) 26
b) 27
c) 25.5
d) 25
Answer: A

Question: Find out the wrong statement
a) Synaptonemal complex and nuclear membrane completely disappear in diplotene
b) Interkinesis is generally short lived
c) Each metaphasic plate in heterotypic division of meiosis contains half the number of diploid set of chromosomes
d) Homologous chromosomes move to respective poles in anaphase-I
Answer: A

Question: What will be the content of DNA in a somatic cell at G2 if its meiotic products have 20 picogram of DNA?
a) 80 Pg
b) 160 Pg
c) 20 Pg
d) 40 Pg
Answer: A

Question: All chromosomes of a cell are directed towards one side and are attached to the nuclear membrane, can be observed in
a) Leptotene
b) Zygotene
c) Pachytene
d) Diplotene
Answer: A

Question: Diplotene phase of meiosis is also characterised by
a. Desynapsis
b. Complete terminalisation of chiasmata
c. Dictyotene stage
d. Complete disappearance of nuclear membrane and nucleoli
e. Complete development of astral rays and aster
f. Longest phase of prophase-I
a) a, c and f
b) b, d and f
c) b, d, e and f
d) a, b, c and e
Answer: A

Question: The recombination nodules which mediate for chromosome recombination appear at intervals on the synaptonemal complex during
a) Pachytene stage
b) Diplotene stage
c) Meiosis
d) Zygotene stage
Answer: A

Question: In oocytes, which stage can last for months or years, since at this stage the chromosomes decondense and are engaged in RNA synthesis
a) Diplotene
b) Intrameiotic interphase
c) Telophase-I
d) Diakinesis
Answer: A

Question: When synapsis is complete all along the chromosome, the cells are said to have entered a stage of prophase I, where exchange of genetic material takes place between homologous chromosomes. The stage is called as
a) Pachytene
b) Zygotene
c) Diplotene
d) Diakinesis
Answer: A

Question: The beginning of which stage of prophase is marked by complete terminalisation of chiasmata and inhibition of RNA synthesis?
a) Diakinesis
b) Zygotene
c) Diplotene
d) Pachytene
Answer: A

Question: What will be the amount of DNA in a pollen grain if its mother cell has 32 picogram DNA in G2 phase?
a) 8 Pg
b) 4 Pg
c) 32 Pg
d) 16 Pg
Answer: A

Question: The paradox of meiosis is
a) Conservation of specific chromosome number from generation to generation
b) Produces four haploid cells after meiosis II
c) It is a double division
d) Does not involve DNA replication
Answer: A

Question: Best stages to study morphology and shape of chromosome are respectively
a) Metaphase, Anaphase
b) Prophase, Anaphase
c) Metaphase, Telophase
d) Teophase, Anaphase
Answer: A

Question: Temporarily suspended stage of diplotene during meiosis-I is
a) Dictyotene
b) Pachytene
c) Diakinesis
d) Leptotene
Answer: A

Question: In 'S' phase of the cell cycle
a) Amount of DNA doubles in each cell
b) Chromosome number is increased
c) Amount of DNA remains same in each cell
d) Amount of DNA is reduced to half in each cell
Answer: A

Question: The enzyme recombinase is required at which stage of meiosis
a) Pachytene
b) Zygotene
c) Diplotene
d) Diakinesis
Answer: A

Question: The complex formed by a pair of synapsed homologous chromosomes is called
a) Bivalent
b) Kinetochore
c) Axoneme
d) Equatorial plate
Answer: A

Question: Meiosis takes place in
a) Meiocyte
b) Megaspore
c) Gemmule
d) Conidia
Answer: A

Question: During gamete formation, the enzyme recombinase participates during
a) Prophase – I
b) Prophase – II
c) Metaphase – I
d) Anaphase – II
Answer: A

Question: Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres
a) Anaphase I
b) Anaphase II
c) Metaphase II
d) Metaphase I
Answer: A

Question: Select the correct option with respect to mitosis
a) Chromosomes move to the spindle equator and get aligned along euatorial plate in metaphase
b) Chromatids separate but remain in the centre of the cell in anaphase
c) Choromatids start moving towards opposite poles in telophase
d) Golgi complex and endoplasmic reticulum are still visible at the end of prophase
Answer: A

Question: At metaphase, chromosomes are attached to the spindle fibres by their
a) Kinetochores
b) Satellites
c) Centromere
d) Secondary constrictions
Answer: A

Question: During mitosis ER and nucleolus begin to disappear at
a) Late prophase
b) Early metaphase
c) Late metaphase
d) Early prophase
Answer: A

Question: Synapsis occurs between
a) Two homologous chromosomes
b) mRNA and ribosomes
c) Spindle fibres and centromere
d) A male and a female gamete
Answer: A

Question: At what stage of the cell cycle are 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

Question: Centromere is required for
a) Movement of chromosomes towards poles
b) Crossing over
c) Transcription
d) Cytoplasmic cleavage
Answer: A

Question: Comparing small and large cells, which statement is correct?
a) Small cells have a large surface area per volume ratio
b) Exchange rate of nutrients is fast with large cells
c) Small cells have a small surface area per volume ratio
d) Exchange rate of nutrients is slow with small cells
Answer: A

Question: In a somatic cell cycle, DNA synthesis takes place in
a) S-phase
b) Prophase of mitosis
c) G1 phase
d) G2 phase
Answer: A

Question: How many chromosomes will the cell have at G1, after S and after M phase respectively, if it has 14 chromosomes at interphase?
a) 14, 14, 14
b) 7, 7, 7
c) 7, 14, 14
d) 14, 14, 7
Answer: A

Question: Which of the following represents the best stage to view the shape, size and number of chromosomes?
a) Metaphase
b) Interphase
c) Prophase
d) Telophase
Answer: A

Question: Each chromosome at the anaphase stage of a bone marrow cell in our body has
a) Only one chromatid
b) Several chromatids
c) No chromatids
d) Two chromatids
Answer: A

Question: Colchicine is an inhibitory chemical, which
a) Prevents the spindle formation in mitosis
b) Stops the functioning of centriole
c) Prevents attaching of centromeres with rays
d) Prevents the formation of equatorial plane
Answer: A

Question: During cell division in apical meristem, the nuclear membrane appears in
a) Telophase
b) Cytokinesis
c) Metaphase
d) Anaphase
Answer: A

Question: How many mitotic divisions are needed for a single cell to make 128 cells?
a) 127
b) 14
c) 32
d) 28
Answer: A

Question: Which of the following structure will not be common to mitotic cell of a higher plant?
a) Centriole
b) Spindle fibre
c) Cell plate
d) Cell plate
Answer: A

Question: Spindle fibre unite with which structure of chromosomes?
a) Kinetochore
b) Centriole
c) Chromomere
d) Chromocentre
Answer: A

Question: Best material for the study of mitosis in laboratory is
a) Root tip
b) Leaf tip
c) Ovary
d) Anther
Answer: A

Question: If a diploid cell is treated with colchicine then it becomes
a) Tetraploid
b) Diploid
c) Monoploid
d) Triploid
Answer: A

Question: 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) Metaphase
b) Telophase
c) Anaphase
d) Prophase
Answer: A

Question: Which one of the following precedes re-formation of the nuclear envelope during M phase of the cell cycle?
a) Formation of the contractile ring, and formation of the phragmoplast
b) Transcription from chromosomes, and reassembly of the nuclear lamina
c) Decondensation from chromosomes, and reassembly of the nuclear lamina
d) Formation of the contractile ring, and transcription from chromosomes
Answer: A

Question: In an angiosperm, how many microspore mother cells are required to produce 100 pollen grains?
a) 25
b) 50
c) 100
d) 75
Answer: A

Question: If there are 4 pollen mother cells in anthers, what will be the number of pollen grains?
a) 16
b) 12
c) 8
d) 4
Answer: A

Question: A gymnospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm will be
a) 8
b) 16
c) 24
d) 12
Answer: A

Question: The term “Meiosis” was given by
a) Farmer and Moore
b) Johansen
c) Knoll and Ruska
d) A. Flemming
Answer: A

Question: What will be DNA amount in Meiotic II products if DNA is 20 picogram in meiocyte at G2-stage?
a) 5 Pg
b) 10 Pg
c) 20 Pg
d) 40 Pg
Answer: A

Question: Crossing over in diploid organism is responsible for
a) Recombination of linked alleles
b) Linkage between genes
c) Segregation of alleles
d) Dominance of genes
Answer: A

Question: In ferns, meiosis takes place at the time of
a) Spore formation
b) Spore germination
c) Antheridia and archegonia formation
d) Gamete formation
Answer: A

Question: In grasses what happens in microspore mother cell for the formation of mature pollen grains?
a) One meiotic and two mitotic divisions
b) One meiotic division
c) One meiotic and one mitotic divisions
d) One mitotic division
Answer: A

Question: Mitotic spindle is mainly composed of which protein?
a) Tubulin
b) Myoglobin
c) Myosin
d) Actin
Answer: A

Question: Crossing over that results in genetic recombination in higher organisms occurs between
a) Non-sister chromatids of a bivalent
b) Two different bivalents
c) Sister chromatids of a bivalent
d) Two daughter nuclei
Answer: A

Question: During mitosis ER and nucleolus begin to disappear at
a) Late prophase
b) Early metaphase
c) Late metaphase
d) Early prophase
Answer: A