CBSE Questions for Class 11 Medical Biology Cell Cycle And Cell Division Quiz 5 - MCQExams.com

Which among the following is the longest phase in meiotic division?
  • Prophase I
  • Metaphase I
  • Prophase II
  • Anaphase I
The metabolism of cell decreases during prophase again increases during which of the following phase?
  • Telophase
  • Anaphase
  • Metaphase
  • G$$_1$$ phase
Germ cells in vertebrate gonads are produced by
  • Mitosis
  • Amitosis
  • Mitosis and meiosis
  • Endomitosis
The changes of karyokinesis in mitosis occur in 
  • Cytoplasm
  • Nucleus
  • Both A and B
  • Nucleolus
.......... reorganizes the nucleolus during the telophase.
  • Secondary constriction I
  • Secondary constriction II
  • Primary constriction
  • Pore complex
Which of the following statement is correct regarding meiosis?
  • Division of nucleus twice but replication of DNA only once
  • Division of nucleus is twice and replication of DNA twice
  • Division of nucleus once and replication of DNA is also once
  • Division of nucleus once and DNA replication is twice
............... is associated with cell division.
  • Microsome
  • Microbody
  • Microtubule
  • Microfibril
In mitosis, splitting of chromatids up to the centromere takes place in
  • Prophase
  • Metaphase
  • Anaphase
  • Telophase
Chromosomal morphology (structure) is best observed at 
  • Prophase
  • Metaphase
  • Interphase
  • Anaphase
An identical sister chromatids are present at
I. Beginning of prophase I
II. Beginning of metaphase I
III. End of telophase I
  • I only
  • II only
  • III only
  • I and II
  • II and III
Meiosis can take place in a
  • Prokaryotic cell
  • Haploid cell
  • Dikaryotic cell
  • Diploid cell
The reappearance of nuclear membrane & nucleolus along with thining & elongation in chromosomes, are diagnostic characters for the phase
  • Anaphase
  • Metaphase
  • Interphase
  • Telophase
The condensation of chromosomes and appearance of astral rays occurs during 
  • Prophase
  • Metaphase
  • Anaphase
  • Telophase
In animals, cytokinesis is
  • Centrifugal
  • Centripetal
  • Random
  • Collateral
The M phase of cell cycle consist of
  • G$$_1$$, S, and G$$_2$$ phase
  • Prophase, metaphase, anaphase, telophase
  • Interphase, prophase, metaphase, anaphase, telophase
  • Only prophase
Which among the following is the correct sequence of prophase I of meiosis?
  • Leptotene, pachytene, zygotene, diplotene, diakinesis
  • Leptotene, diplotene, pachytene, zygotene, diakinesis
  • Leptotene, zygotene, pachytene, diplotene, diakinesis
  • Leptotene, zygotene, diakinesis, diplotene
What happens during telophase?
  • Nuclear membrane is formed
  • Nucleolus appears
  • Astral rays disappear
  • All of the above
Which cell division is responsible for the growth of tissue and individuals?
  • Amitosis
  • Mitosis
  • Meiosis
  • Mitosis and meiosis
In mitosis, the spindle is
  • Bipolar
  • Multipolar
  • Apolar
  • Random
The two conical half spindles, are found in which of the following phase? 
  • Prophase
  • Metaphase
  • Anaphase
  • Telophase
How many types of spindles are formed, during cell division in eukaryotes?
  • 3
  • 4
  • 5
  • 2
Which type of cell division heals the wound?
  • Amitosis
  • Mitotic
  • Meiosis
  • Free nuclear
The significance of meiosis is that it 
  • Produce four cells having chromosomal number equal to mother cell.
  • Occurs in all types of cells.
  • Maintains the constant chromosomes number of a particular species.
  • Growth of animal body organs.
Meiosis results in
  • Half number of chromosome
  • Same number of chromosome
  • Double number of chromosome
  • 1/4 number of chromosome
Nuclear membrane disappears in
  • Late prophase
  • Early prophase
  • Metaphase
  • Telophase
The longest phase of mitosis is
  • Prophase
  • Metaphase
  • Anaphase
  • Telophase
The nuclear spindle ..
  • Is formed in amitotic division
  • Is formed in mitotic division
  • Is formed in meiotic division
  • Is formed in mitotic and meiotic division
Which statement is true for mitosis?
  • Daughter cells exhibit division of labour, i.e., perform different functions
  • Daughter cells are exactly similar in all respect
  • Daughter cells have half the number of chromosomes as compared to mother cell
  • Daughter cells have differences in genetic characters
........... is the best material for the study of mitosis in laboratory.
  • Anther
  • Root tip
  • Leaf tip
  • Ovary
Centromere is required for which of the following?
  • Movement of chromosomes towards poles
  • Cytoplasmic cleavage
  • Crossing over
  • Transcription process
Complete the following statement.
During meiosis, there is
  • One round of DNA replication and one division
  • Two round of DNA replication and one division
  • Two round of DNA replication and two division
  • One round of DNA replication and two division
The two successive cell division occurs in the process of
  • Amitosis
  • Meiosis
  • Mitosis
  • All of the above
The gametes are produced in gonads by the process of
  • Mitosis
  • Meiosis
  • Both A and B
  • None of the above
Crossing over generally takes place during
  • Amitosis
  • Mitosis
  • Meiosis
  • None of the above
The meiotic process by which homologous are paired during prophase I is called as_______________
  • Chiasma
  • Crossing over
  • Duplication
  • Synapsis
Meiosis is a process of cell division which
  • Results in an increase in the size of an organism
  • Occurs in the somatic as well as in the reproductive cells
  • Results in the formation of four daughter cells having half the chromosome number of the parent cell
  • Maintains the chromosome number of a particular spaces constant
In meiosis ______________.
  • First division is reductional
  • First division is equational
  • Second division is reductional
  • None of the above
Telomeres with repetitive DNA sequences
  • Act as replicons
  • Are transcription initiators
  • Help in chromosome pairing
  • Prevent chromosome loss
Stage connecting meiosis-I and meiosis-II is
  • Interphase-I
  • Interphase-II
  • Interkinesis
  • Anaphase-I
Longest phase of meiosis is ______________.
  • Prophase-I
  • Prophase-II
  • Anaphase-I
  • Metaphase-II
Which of the following is called as a reduction division in the formation of new cells?
  • Meiosis
  • Mitosis
  • Cytokinesis
  • All of the above
After mitosis, the number of chromosomes in the daughter cells shall be
  • One half of the parent cell
  • Same as the parent cell
  • Twice of the parent cell
  • One fourth of the parent cell
The centromere does not divide till the end of metaphase. This is important because centromere 
  • Contains genes that control prophase and metaphase
  • Produces spindle fibre
  • Holds the replicated DNAs together
  • Is connected with nuclear envelope
The term 'mitosis' was introduced by 
  • Farmer and Moore
  • Strasburger
  • Fleming
  • Virchow
In which group of eukaryotic organisms will the nuclear membrane remain intact during mitosis?
  • Seedless plants
  • Dinoflagellates
  • Diatoms
  • Both B and C
The role of mitosis is not merely, to divide a cell into two daughter cells but to ensure genetic continuity, from one cell generation to another cell generation. The mechanism ensuring genetic continuity is
  • Formation of cells with new chromosomes
  • Formation of two daughter cells
  • Formation of two cells with identical DNA
  • Halving the chromosome number between the two new cells
In diploid zygote, chromosome number isChromosome number in a gamete will be 
  • 10
  • 20
  • 30
  • 40
The phase of shortest duration is 
  • S phase
  • Prophase
  • Metaphase
  • Anaphase
The stages in proper sequence of prophase I are
  • Diplotene $$\rightarrow$$ diakinesis $$\rightarrow$$ pachytene $$\rightarrow$$ zygotene $$\rightarrow$$ leptotene
  • Leptotene $$\rightarrow$$ zygotene $$\rightarrow$$ pachytene $$\rightarrow$$ diplotene $$\rightarrow$$ diakinesis
  • Leptotene $$\rightarrow$$ pachytene $$\rightarrow$$ zygotene $$\rightarrow$$ diakinesis $$\rightarrow$$ diplotene
  • Zygotene $$\rightarrow$$ leptotene $$\rightarrow$$ pachytene $$\rightarrow$$ diakinesis $$\rightarrow$$ diplotene
 Which one is related to telophase ? 
  • Formation of nuclear membrane
  • Formation of nucleolus
  • Elongation of chromosome
  • Formation of two daughter nuclei
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