Mitosis Process in Onion Root Tips

The video tutorial explains the stages of mitosis using an onion root tip as an example. It covers prophase, where chromosomes become visible and the nuclear membrane disintegrates; metaphase, where chromatids align at the cell equator; anaphase, where sister chromatids separate; and telophase, where chromosomes decondense and cytokinesis occurs, resulting in two identical daughter cells.

What region of the onion root tip is described in the video?

• Root cap

• Proliferous region

• Elongation zone

• Maturation zone

What happens to the chromosomes during prophase?

• They divide into chromatids

• They move to the cell poles

• They become more visible and thick

• They disappear

What occurs to the nuclear membrane during late prophase?

• It thickens

• It becomes permeable

• It starts to disintegrate

• It splits into two

What is the role of spindle threads during metaphase?

• They dissolve the nuclear membrane

• They form the nuclear membrane

• They pull chromatids to the cell poles

• They align chromatids at the cell equator

How are chromatids positioned during metaphase?

• Outside the cell

• Along the equator of the cell

• At the poles of the cell

• Randomly within the cell

During anaphase, what is the fate of sister chromatids?

• They move to opposite poles

• They remain at the equator

• They fuse together

• They disintegrate

What is the rapid phase of mitosis described in the video?

• Anaphase

• Telophase

• Metaphase

• Prophase

What structure forms during cytokinesis?

• Cell plate

• Nuclear membrane

• Chromatin network

• Spindle threads

What marks the end of cell division in mitosis?

• Formation of chromatids

• Disintegration of nuclear membrane

• Reformation of nuclear membrane

• Alignment of chromatids

What process follows the completion of nuclear division?

• Chromosome thickening

• Cytokinesis

• Chromatid formation

• Spindle formation