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1 : An organism with 4 pairs of chromosomes. After meiosis I, how many chromosomes and chromatids will be present in each daughter cell?
A
:
8 chromosomes and 16 chromatids
B
:
4 chromosomes and 8 chromatids
C
:
4 chromosomes and 4 chromatids
D
:
8 chromosomes and 8 chromatids
2 : In which phase of the cell cycle do the chromosomes duplicate?
A
:
Mitosis
B
:
G1 phase
C
:
G2 phase
D
:
S phase
3 : Which of the following is NOT a characteristic of mitosis?
A
:
It occurs in somatic cells
B
:
It results in genetically identical daughter cells.
C
:
The chromosomes number is halved in daughter cells.
D
:
It results in the formation of two daughter cells
4 : At which stage of mitosis do chromosomes line up in the center?
A
:
Prophase
B
:
Metaphase
C
:
Anaphase
D
:
Telophase
5 : If the nuclear membrane is reforming around two nuclei, which stage is this?
A
:
Anaphase
B
:
Telophase
C
:
Prophase
D
:
Metaphase
6 : How does the centrosome contribute to mitosis?
A
:
Initiates DNA replication
B
:
Makes mitotic spindle
C
:
Forms the nuclear envelope
D
:
Duplicates organelles
7 : Centrosomes make mitotic spindle in:
A
:
Animal cells
B
:
Plant cells
C
:
Prokaryotic cells
D
:
All of these
8 : Which event is unique to meiosis but not mitosis?
A
:
DNA replication
B
:
Chromosome ligation
C
:
Crossing over
D
:
Nuclear division
9 : In which phase of cell cycle does maximum growth occur in the cell?
A
:
M phase
B
:
S phase
C
:
G1 phase
D
:
G2 phase
10 : Why is meiosis II necessary after meiosis I?
A
:
To replicate chromosomes
B
:
To reduce chromosome number
C
:
To separate chromatids
D
:
To ensure genetic recombination
11 : The cell cycle consists of major phases:
A
:
2
B
:
3
C
:
4
D
:
6
12 : The longest phase of cell cycle is:
A
:
Interphase
B
:
Prophase
C
:
Metaphase
D
:
Telophase
13 : In which stage of the cell cycle most cells spend their lives?
A
:
Prophase
B
:
Metaphase
C
:
Interphase
D
:
Telophase
14 : During which phase the metabolic activities of cell are very high?
A
:
Prophase
B
:
Metaphase
C
:
Interphase
D
:
Anaphase
15 : The Chromosomes are visible during:
A
:
Interphase
B
:
G-1 Phase
C
:
S-Phase
D
:
Cell division
16 : Which phase lasts for at least 90% of total time for cell cycle?
A
:
Interphase
B
:
Karyokinesis
C
:
Cytokinesis
D
:
Prophase
17 : Genetic material in nucleus is in loose thread-like form, which is called:
A
:
Chromatin
B
:
Centromere
C
:
Spindle fibers
D
:
Nucleolus
18 : Typically interphase lasts for at of total time required for cell cycle:
A
:
90%
B
:
80%
C
:
70%
D
:
50%
19 : In which stage of cell cycle, the cell prepares enzymes for chromosome duplication?
A
:
S-phase
B
:
G-1 phase
C
:
G-2 phase
D
:
M-phase
20 : In which phase of cell cycle, cell division stops:
A
:
G-0
B
:
G-1
C
:
G-2
D
:
S
21 : Inhibition of protein synthesis in this phase prevent cell from undergoing mitosis:
A
:
G₁ Phase
B
:
G₂ Phase
C
:
S Phase
D
:
G₀ Phase
22 : The Phase in which two sister chromatids are formed:
A
:
S-phase
B
:
G2 phase
C
:
G1 phase
D
:
G0 phase
23 : Cytokinesis means?
A
:
Division of cytoplasm
B
:
Division of nucleus
C
:
Division of chromosomes
D
:
Division of mitochondria
24 : Mitosis was discovered in the year:
A
:
1890
B
:
1880
C
:
1870
D
:
1860
25 : The phase of cell cycle in which cell prepares itself for division is called:
A
:
Prophase
B
:
Interphase
C
:
Metaphase
D
:
Telophase
26 : Prokaryotic cells undergo a process of cell division which is called:
A
:
Meiosis
B
:
Multiple fission
C
:
Binary fission
D
:
Budding
27 : At which stage cell doubles its chromosomes:
A
:
G-1 phase
B
:
S-phase
C
:
G-2 phase
D
:
G-0 phase
28 : Mitosis consists of how many phases?
A
:
One
B
:
Two
C
:
Three
D
:
Four
29 : Whose cells never enter in G-0 phase?
A
:
Liver
B
:
Kidney
C
:
Nerves
D
:
Epithelial
30 : In which phase cell prepares proteins that are essential for the production of spindle fibers?
A
:
S-phase
B
:
G-1 phase
C
:
G-2 phase
D
:
G-0 phase
31 : Mitosis was discovered by:
A
:
Pasteur
B
:
Darwin
C
:
Walther Flemming
D
:
Lamarck
32 : Karyokinesis involves division of:
A
:
Mitochondria
B
:
Cytoplasm
C
:
Nucleus
D
:
Cell membrane
33 : Mitosis is a type of cell division in which a cell divides into daughter cells.
A
:
8
B
:
6
C
:
4
D
:
2
34 : Mitosis occurs only in:
A
:
Germ line cells
B
:
Prokaryotic cells
C
:
Eukaryotic cells
D
:
Bacterial cells
35 : The chromosomes arrange themselves along the equator of the cell in phase:
A
:
Prophase
B
:
Metaphase
C
:
Anaphase
D
:
Telophase
36 : Complete set of spindle fibre is known as:
A
:
Chromatin
B
:
Kinetochore
C
:
Mitotic spindle
D
:
Cleavage
37 : In which phase of mitosis nuclear envelop of a cell is broken down?
A
:
Prophase
B
:
Metaphase
C
:
Anaphase
D
:
Telophase
38 : During which phase of Mitosis Spindle fibers are formed?
A
:
G2 Phase
B
:
Interphase
C
:
Prophase
D
:
Metaphase
39 : Which stage of cell division is very different in animal and plant cell division?
A
:
Telophase
B
:
Metaphase
C
:
Cytokinesis
D
:
Anaphase
40 : Which phase is reversal of Prophase?
A
:
Metaphase
B
:
Anaphase
C
:
Interphase
D
:
Telophase
41 : In which phase chromosomes unfold back into chromatin?
A
:
Anaphase
B
:
Telophase
C
:
Prophase
D
:
Metaphase
42 : Which spindle fibres connect with kinetochore of chromosomes?
A
:
Aster Spindles
B
:
Kinetochore Spindles
C
:
Microtubule Spindles
D
:
Actin
43 : In which phase of mitosis sister chromatids are separated?
A
:
Telophase
B
:
Anaphase
C
:
Prophase
D
:
Metaphase
44 : The vesicles for the formation of phragmoplast originate from:
A
:
Endoplasmic reticulum
B
:
Golgi apparatus
C
:
Nucleus
D
:
Mitochondria
45 : Phase of mitosis in which chromosomes arrive at the poles, is:
A
:
Anaphase
B
:
Metaphase
C
:
Telophase
D
:
Prophase
46 : Which organism regenerates its lost parts through mitosis?
A
:
Sea star
B
:
Horse
C
:
Mosquito
D
:
Frog
47 : Error in the control of mitosis may cause:
A
:
Cancer
B
:
Ulcer
C
:
Constipation
D
:
Cough
48 : Regeneration Process is found in:
A
:
Hydra
B
:
Funaria
C
:
Moss
D
:
Sea Star
49 : During regeneration, production of new cells is achieved by:
A
:
Binary Fission
B
:
Osmosis
C
:
Mitosis
D
:
Meiosis
50 : Sea star gains its lost arm by:
A
:
Budding
B
:
Mitosis
C
:
Meiosis
D
:
Fragmentation
51 : Budding process is found in:
A
:
Fern
B
:
Onion
C
:
Cockroach
D
:
Hydra
52 : In hydra, asexual reproduction occurs through:
A
:
Mitosis
B
:
Budding
C
:
Cutting
D
:
Spores
53 : Process of formation of new tumors is known as:
A
:
Synapsis
B
:
Crossing over
C
:
Metastasis
D
:
Regeneration
54 : The tumors which remain at their production site are called:
A
:
Benign
B
:
Malignant
C
:
Metastasis
D
:
Denign
55 : Which organism is reproduced by budding?
A
:
Amoeba
B
:
Paramecium
C
:
Sea star
D
:
Hydra
56 : The tumors that invade other tissues are called:
A
:
Benign
B
:
Malignant
C
:
Metastasis
D
:
Mutation
57 : Tumors are produced as a result of error in:
A
:
Meiosis
B
:
Mitosis
C
:
Binary fission
D
:
Multiple fission
58 : Meiosis was discovered for the first time by:
A
:
Rudolf Virchow
B
:
Walther Flemming
C
:
August Weismann
D
:
Oscar Hertwig
59 : Oscar Hertwig discovered meiosis in:
A
:
1875 A.D
B
:
1876 A.D
C
:
1877 A.D
D
:
1878 A.D
60 : Which of the following distinguishes Meiosis from Mitosis:
A
:
The Chromosome number is reduced
B
:
Chromosomes undergo crossing over
C
:
The daughter cells are genetically different from the parent cell
D
:
All of these
61 : During Meiosis one cell divides into daughter cells:
A
:
2
B
:
3
C
:
4
D
:
8
62 : The word meiosis is derived from a Greek word meton, which means:
A
:
To make smaller
B
:
To make bigger
C
:
To cut
D
:
To duplicate
63 : Cells which form the body of organism are called:
A
:
Germ cells
B
:
Gametes
C
:
Somatic cells
D
:
Parent cells
64 : Meiosis does not occur in:
A
:
Animals
B
:
Plants
C
:
Prokaryotes
D
:
Fungi
65 : Meiosis occurs only in:
A
:
Haploid cell
B
:
Diploid cell
C
:
Triploid cell
D
:
Tetraploid cell
66 : The longest phase in meiosis is:
A
:
Metaphase I
B
:
Anaphase I
C
:
Telophase I
D
:
Prophase I
67 : The phase in which crossing over occurs:
A
:
Anaphase
B
:
Metaphase
C
:
Prophase II
D
:
Prophase I
68 : Chiasmata is formed during:
A
:
Prophase I
B
:
Metaphase I
C
:
Anaphase I
D
:
Telophase I
69 : Point of attachment of two non-sister chromatids of homologous chromosomes is called:
A
:
Chiasmata
B
:
Crossing over
C
:
Bivalent
D
:
Metaphase
70 : The exchange of parts of chromatids of homologous chromosomes is called:
A
:
Chiasmata
B
:
Crossing Over
C
:
Linkage
D
:
Phragmoplast
71 : Each bivalent has chromatids:
A
:
2
B
:
3
C
:
4
D
:
8
72 : Each pair of homologous chromosomes is called:
A
:
Tetrad
B
:
Chiasmata
C
:
Bivalent
D
:
Crossing over
73 : In which phase, kinetochore spindle fibres shorten?
A
:
Prophase I
B
:
Metaphase I
C
:
Anaphase I
D
:
Telophase I
74 : In which organism did Thomas Hunt Morgan observe the phenomenon of crossing over?
A
:
Bat
B
:
Mosquito
C
:
Fruit fly
D
:
Sparrows
75 : Thomas Hunt Morgan observed which phenomenon in fruit fly?
A
:
Synapsis
B
:
Chiasmata
C
:
Crossing over
D
:
Meiosis I
76 : When does DNA replication occur in both meiosis and mitosis?
A
:
Prophase
B
:
Metaphase
C
:
Anaphase
D
:
Interphase (S phase)
77 : How many daughter cells are produced in meiosis?
A
:
2
B
:
3
C
:
4
D
:
6
78 : Which type of cells undergo mitosis?
A
:
Germ cells
B
:
Stem cells
C
:
Somatic cells
D
:
Gametes
79 : Which process generates genetic variation through crossing-over?
A
:
Mitosis
B
:
Meiosis
C
:
Cytokinesis
D
:
DNA replication
80 : What is the chromosome number of daughter cells after mitosis compared to the parent cell?
A
:
Half
B
:
Double
C
:
The same
D
:
Tripled
81 : In which phase of meiosis do homologous chromosomes separate?
A
:
Prophase I
B
:
Anaphase I
C
:
Metaphase II
D
:
Anaphase II
82 : What is the primary function of meiosis in animals?
A
:
Growth and development
B
:
Maintenance of tissues
C
:
Production of gametes
D
:
Repair of cells
83 : Division of cytoplasm is called:
A
:
Karyokinesis
B
:
Cytokinesis
C
:
Endocytosis
D
:
Phagocytosis
84 : The division of nucleus is called:
A
:
Cytokinesis
B
:
Synapsis
C
:
Karyokinesis
D
:
Interphase
Biology 9th MCQs || Ilam Ghar
Biology 9th
Chapter 4 : Cell Cycle
