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mcqs of
,
1 : An organism with 4 pairs of chromosomes. After meiosis I, how many chromosomes and chromatids will be present in each daughter cell?
1
:
8 chromosomes and 16 chromatids
2
:
4 chromosomes and 8 chromatids
3
:
4 chromosomes and 4 chromatids
4
:
8 chromosomes and 8 chromatids
2 : In which phase of the cell cycle do the chromosomes duplicate?
1
:
Mitosis
2
:
G1 phase
3
:
G2 phase
4
:
S phase
3 : Which of the following is NOT a characteristic of mitosis?
1
:
It occurs in somatic cells
2
:
It results in genetically identical daughter cells.
3
:
The chromosomes number is halved in daughter cells.
4
:
It results in the formation of two daughter cells
4 : At which stage of mitosis do chromosomes line up in the center?
1
:
Prophase
2
:
Metaphase
3
:
Anaphase
4
:
Telophase
5 : If the nuclear membrane is reforming around two nuclei, which stage is this?
1
:
Anaphase
2
:
Telophase
3
:
Prophase
4
:
Metaphase
6 : How does the centrosome contribute to mitosis?
1
:
Initiates DNA replication
2
:
Makes mitotic spindle
3
:
Forms the nuclear envelope
4
:
Duplicates organelles
7 : Centrosomes make mitotic spindle in:
1
:
Animal cells
2
:
Plant cells
3
:
Prokaryotic cells
4
:
All of these
8 : Which event is unique to meiosis but not mitosis?
1
:
DNA replication
2
:
Chromosome ligation
3
:
Crossing over
4
:
Nuclear division
9 : In which phase of cell cycle does maximum growth occur in the cell?
1
:
M phase
2
:
S phase
3
:
G1 phase
4
:
G2 phase
10 : Why is meiosis II necessary after meiosis I?
1
:
To replicate chromosomes
2
:
To reduce chromosome number
3
:
To separate chromatids
4
:
To ensure genetic recombination
Chapter 4 : Cell Cycle
Biology 9th MCQs || Ilam Ghar
Biology 9th
