Solved MCQs of Biology Class 9
The longest phase is:
Mitotic phase
Meiosis
Cell cycle
Interphase
the failure of replicated chromosomes to separate during meiosis is …………… .
Disjunction
Non-disjunction
Both a & b
None
The class of man is:
Insecta
Mammalia
Magnoliopsida
Proteobacteria
In which stage of the cell cycle most cells spend their lives?
Prophase
Metaphase
Interphase
Telohase
Nuclei of human cell contain ………… autosomes.
23 pairs
22 pairs
12 pairs
14 pairs
In turner’s syndrome female have …………….. chromosomes .
46
45
47
22
Which phase of meiosis is similar to mitosis?
Prophase I
Telophase II
Meiosis I
Meiosis II
……………. is similar to mitosis.
Meiosis I
Meosis II
Interphase
G-phase
Programmed cell death is called …………… .
Apoptosis
Necrosis
Both a & b
None
In which stage of the cell cycle each chromosomes is duplicated and so it consists of two chromatids?
G I
S
M
G2
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