What initiates cell division in plant cells?

The cell organelle that is responsible for initiating cell division is centriole. Its main function includes the formation of cilia during interphase and the formation of spindle fibre for cell division. Therefore the correct answer is centriole.

What happens if centrosome is missing?

In the absence of the centrosome, the microtubules of the spindle are focused to form a bipolar spindle. Many cells can completely undergo interphase without centrosomes. Some cell types arrest in the following cell cycle when centrosomes are absent, though this doesn’t always happen.

Why is centrosome absent in plant cell?

Both the centriole in centrosome lie perpendicular to each other. They form centrosomes which are absent in plant cells and yet plant cells divide.

What is the centrosome function?

A centrosome is a cellular structure involved in the process of cell division. Proteins called microtubules assemble into a spindle between the two centrosomes and help separate the replicated chromosomes into the daughter cells.

What is the role of centrosomes during cell division?

The centrosome is an important part of how the cell organizes the cell division. And the centrosomes organize the microtubules, so it’s called the microtubules organizing center. The centrosomes duplicate before cell division, so they then help to organize the microtubules and the cell division process.

What is the main function of the centrosome in a plant cell?

Centrosomes are structures found inside of cells. They are made from two centrioles. Centrioles are microtubule rings. The main purpose of a centrosome is to organize microtubules and provide structure for the cell, as well as work to pull chromatids apart during cell division.

When does the centrosome start its division?

As the separation of chromosome is the most important in cell division the centrosome start its division at Prophase. In case of plants the spindles are formed with the help of some motor proteins and micro tubular structures and proteins.

Why centrosomes are not found in plant cells?

Centrosomes are specialized microtubule organizers, which do not occur in most of the plants. But it doesn’t mean that plant cells can’t organize spindle fibers. Yes, plants can form necessary spindle fibers, because they have microtubules and some specific enzyme which can organize them into spindle fibers.

How do plant cells without centrioles do cell division?

For more info (and the source of the quote), see Brown & Lemmon, “The Pleiomorphic Plant MTOC: An Evolutionary Perspective” Plant cells without centrioles build special vesicles from their Golgi apparatus which are important for cell division. This website has a nice comparison of different modes of cell division.

How are spindles formed in plant cells?

In case of plants the spindles are formed with the help of some motor proteins and micro tubular structures and proteins. The spindle formation is the main event of chromosome separation and chromosome separation is the main thing of cell division…so whenever the formation of spindle is confirmed the cell division start to proceed.