Solved MCQs of Biology Class 9
Type of spindle fibre which attaches the chromosomes is called:
Kinetochore
Non Kinetochore
Bot a and b
Centromere
Which of the following is unique to mitosis and not a part of meiosis?
Homologous chromosomes pair forming bivalents
Homologous chromosomes cross over
Chromosomes pairs are broken during anaphase
Chromatids separate during anaphase
Cytokinesis in animals take place by:
Furrow
Phragmoplast
Telophase
None of these
The phases of cell cycle are:
Interphase
Division phase
Both a and b
None
Presence of third copy of homoglus chromosomes in the cell is called ……….. .
Monosomy
Disomy
Trisomy
Tetra somy
Prior to cell division, each chromosome replicates or duplicates its genetic material. The products are connected by a centromere and are called:
Sister chromosomes
Homologous Chromosomes
Non-sister chromatids
Sister chromatids
Which event distinguishes meiosis form mitosis?
Condensation of chromosomes
Loss of the nuclear membrane
Formation of metaphase plate
Pairing of homologous chromosomes
Uncoiling of chromosomes take place during:
Anaphase
Telophase
Anaphase
Metaphase
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