Spindle fibres attach to chromosomes at their

Find out the correct match.

At which region do the spindle fibers attach to the chromosome?

In higher plants,the bipolar spindle is formed from which of the following?

Choose the correct combination of options to select the correct statement for prophase:
$I.$ Chromosomal material condenses to form compact mitotic chromosomes.
$II.$ The assembly of mitotic spindle is initiated by the microtubules.
$III.$ Cells do not show organelles when viewed under the prophase.
$IV.$ The nucleolus or nucleoli degenerate completely.

The bipolar spindle fibers attach to which part of the chromosome?