Question

b)
The spindle fibres start appearing from
stage of
karyokinesis
(A)
Prophase
(B)
Metaphase
(C)
Anaphase
(D)
Telophase​

Answer 1

The spindle fibres starts appearing from Prophase stage of the Karyokinesis.

Option (A)

Explanation:

• The cell division is divided into various stages, but broadly it is cytokinesis and Karyokinesis.
• The Karyokinesis stage is divided into various other phases namely the prophase, the metaphase, the anaphase, and the telophase.
• In prophase of the Karyokinesis, the chromatin fibres starts to condense to form chromosomes and the microtubules in the cell also starts to form spindle fibres, and the centrioles in the animal cell starts moving towards the poles of the cell.
• So, it is first in prophase that spindle fibres first starts appearing.
• In metaphase, this spindle fibres helps in the alignment of the chromosomes on the equatorial plane of the cell, and thus assists in the cell division.