Root tip mitosis practical

1. What is the practical of mitosis in onion root tip?
2. Why would root tips be used in a mitosis lab?
3. What is a root tip mitosis?
4. Why did this lab use onion root tips to study mitosis?
5. What is the main function of root tip?
6. Which region of root tip is best for observing mitosis and why?
7. What are two reasons why root tips are excellent observation points for mitosis?
8. How many chromosomes are in a root tip cell?
9. Where does mitosis occur in the root tip?
10. Which phase of mitosis is most common in the root tip?
11. What is onion root tip assay?
12. What is the conclusion of onion cell lab report?
13. How do you observe the cells of onion root tip under microscope?
14. What is the main function of root tip?
15. Which stain is used to identify different stages of mitosis in onion root tip?
16. What is the observation of onion cell experiment?
17. What is a good conclusion for a lab?
18. What is the purpose of staining the onion cells?

What is the practical of mitosis in onion root tip?

Why is onion root tip used to demonstrate mitosis in this experiment? It is because of the meristematic cells that are situated in the tip of the roots that render the most desirable and suitable raw material to study the different stages of mitosis. Onion is a monocot plant.

Why would root tips be used in a mitosis lab?

Onion root tips are commonly used to study mitosis. They are sites of rapid growth, so the cells are dividing rapidly.

What is a root tip mitosis?

Cell division occurs rapidly in growing root tips of sprouting seeds or bulbs. The most commonly used root tips in labs to study mitosis are onion, wheat, lentil, barley and alfalfa. An onion root tip is a rapidly growing part of the onion and thus many cells will be in different stages of mitosis.

Why did this lab use onion root tips to study mitosis?

Why use onion roots for viewing mitosis? The roots are easy to grow in large numbers. cells can be observed. The chromosomes can be stained to make them more easily observable.

What is the main function of root tip?

Darwin realized that the root tip functions as a sensory organ, and that its role is of paramount importance not only for root growth but also for growth and development of the entire plant.

Which region of root tip is best for observing mitosis and why?

In plants, such divisions rapidly take place in meristematic tissues of root and shoot apices, where the stages of mitosis can be easily observed.

What are two reasons why root tips are excellent observation points for mitosis?

The root tip of a plant contains actively dividing cells, making root tips excellent observation points for mitosis. Each plant cell is surrounded by a cell wall, making the identification of cells easy. Also, the cells near the root tip are highly organized into concentric layers, making them easy to see and count.

How many chromosomes are in a root tip cell?

Onion root tip cells have 16 chromosomes in each cell.

Where does mitosis occur in the root tip?

The root tip of a plant contains an apical meristem that facilitates the growth in length of the root. The apical meristem is just a small area at the end of the root tip where mitosis occurs (see Figure 1).

Which phase of mitosis is most common in the root tip?

Even in a growing root tip, the majority of the cells will likely be in interphase. In interphase they will look like 'normal' plant cells, with a dark and well defined nucleus . Remember that although interphase is the phase cells spend the most time in, they are not inactive.

What is onion root tip assay?

cepa (onion) root tip bioassay is considered as a simple and reliable test model to assess the genotoxic potential of chemicals due to its characteristic proliferation rate, high percent of dividing cells and relatively prominent cells with lesser number of large sized monocentric chromosomes (2n = 16) that stain well ...

What is the conclusion of onion cell lab report?

Answer: Conclusion. As cell walls and large vacuoles are clearly observed in all the cells, the cells placed for observation are plant cells.

How do you observe the cells of onion root tip under microscope?

In order to examine cells in the tip of an onion root, a thin slice of the root is placed onto a microscope slide and stained so the chromosomes will be visible. The cells you'll be looking at in this activity were photographed with a light microsope and then digitized so you can see them on the computer.

What is the main function of root tip?

Darwin realized that the root tip functions as a sensory organ, and that its role is of paramount importance not only for root growth but also for growth and development of the entire plant.

Which stain is used to identify different stages of mitosis in onion root tip?

Acetocarmine is a DNA specific stain like feulgen stain, so the super coiled chromosomes during different stages of mitosis present in the onion root tip cells can be visualized perfectly by treating with this stain.

What is the observation of onion cell experiment?

Observations. There are a large number of regularly shaped cells lying side by side and each cell has a distinct cell wall. A distinct nucleus is present on the periphery of each cell. Lightly stained cytoplasm is observed in each cell.

What is a good conclusion for a lab?

When writing a conclusion you should: briefly restate the purpose of the experiment (i.e. the question it was seeking to answer) identify the main findings (i.e. the answer to the research question) note the main limitations that are relevant to the interpretation of the results.

What is the purpose of staining the onion cells?

A single layer of onion cells (membrane) can be easily obtained from the bulb. These can be stained to bring some cell structures - including the nucleus and cell membrane/wall - into contrast, so that they can be observed using a light microscope.