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Online Onion Root Tips Answers: A Comprehensive Guide for Students
Are you staring at a microscope slide, overwhelmed by the seemingly endless intricacies of onion root tips? Finding accurate and reliable answers online can feel like searching for a needle in a haystack. This comprehensive guide provides you with the information you need to understand and interpret your observations of onion root tips, clarifying common questions and providing a deeper understanding of the cell cycle and mitosis. We'll dissect the key aspects of onion root tip analysis, equipping you with the knowledge to confidently answer any question about this crucial biological specimen.
Why Study Onion Root Tips?
Onion root tips are a favorite among biology students because they offer a readily accessible and cost-effective way to observe mitosis, the process of cell division. Their rapidly dividing cells make them ideal for viewing the various stages of the cell cycle – prophase, metaphase, anaphase, and telophase – under a microscope. This allows for a practical understanding of fundamental biological processes.
Understanding the Cell Cycle in Onion Root Tips
The cell cycle is a series of events that lead to cell growth and division. In onion root tips, this process is particularly active in the meristematic region, located at the very tip of the root. This area contains actively dividing cells, making it the perfect location for microscopic analysis. Here's a breakdown of the phases:
#### 1. Interphase:
This is the preparatory phase where the cell grows and replicates its DNA. It's not directly visible as distinct stages under a standard microscope, but it's crucial for the subsequent phases.
#### 2. Prophase:
Chromatin condenses into visible chromosomes. The nuclear membrane begins to break down, and the mitotic spindle starts to form.
#### 3. Metaphase:
Chromosomes align at the metaphase plate, the equatorial plane of the cell. This alignment is crucial for ensuring equal distribution of genetic material to daughter cells.
#### 4. Anaphase:
Sister chromatids separate and move towards opposite poles of the cell, pulled by the spindle fibers.
#### 5. Telophase:
Chromosomes reach the poles, the nuclear membrane reforms, and the cytoplasm begins to divide (cytokinesis). Two daughter cells are formed, each with a complete set of chromosomes.
Identifying Stages of Mitosis Under the Microscope
Successfully identifying the phases of mitosis requires careful observation and practice. Here's what to look for:
Prophase: Condensed, visible chromosomes; disappearing nuclear membrane.
Metaphase: Chromosomes aligned at the cell's equator.
Anaphase: Sister chromatids separating and moving towards opposite poles.
Telophase: Chromosomes at the poles; reforming nuclear membrane; cytokinesis starting.
Remember to use appropriate magnification and staining techniques to enhance visibility.
Common Mistakes and How to Avoid Them
Many students struggle with accurately identifying the mitotic stages. Here are some common pitfalls:
Confusing prophase and metaphase: Pay close attention to the chromosome alignment. Metaphase shows a clear alignment at the equator, while prophase shows more dispersed chromosomes.
Misinterpreting anaphase: Ensure you're observing the separation of sister chromatids, not just condensed chromosomes.
Overlooking telophase: Look carefully for the reforming nuclear membrane and the beginning of cytokinesis (cytoplasmic division).
Practicing with multiple slides and consulting reliable resources will significantly improve your accuracy.
Beyond the Basics: Advanced Onion Root Tip Analysis
While observing the basic stages of mitosis is a fundamental aspect of onion root tip analysis, more advanced studies can explore:
Chromosome number counts: Determining the number of chromosomes in each cell.
Mitotic index calculations: Calculating the percentage of cells undergoing mitosis at a given time.
Effects of environmental factors: Investigating how factors like temperature or chemicals affect the mitotic rate.
These advanced applications demonstrate the versatility of onion root tips as a model system in biological research.
Conclusion
Understanding onion root tips offers a fundamental gateway to comprehending the complexities of cell biology. By carefully observing the stages of mitosis and employing proper identification techniques, students can gain a solid grasp of this crucial biological process. This guide provides the necessary foundation for navigating the intricacies of online resources and confidently answering any questions related to onion root tip analysis.
FAQs
1. What type of stain is best for viewing onion root tips? Acetocarmine is a commonly used stain that effectively highlights chromosomes.
2. How do I prepare an onion root tip slide for microscopic observation? Detailed protocols are readily available online, involving root tip fixation, hydrolysis, staining, and mounting.
3. What magnification is needed to effectively observe mitosis? A compound light microscope with 40x or higher magnification is generally sufficient.
4. Are there any online resources beyond this blog that offer further assistance? Yes, many educational websites and videos provide detailed explanations and visuals of mitosis in onion root tips.
5. Why are onion root tips preferred over other plant tissues for observing mitosis? The actively dividing cells in the root tip meristem make them ideal for observing the various stages of mitosis clearly.
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| online onion root tips answers: The Yearling Marjorie Kinnan Rawlings, 2011-06-28 An American classic—and Pulitzer Prize–winning story—that shows the ultimate bond between child and pet. No novel better epitomizes the love between a child and a pet than The Yearling. Young Jody adopts an orphaned fawn he calls Flag and makes it a part of his family and his best friend. But life in the Florida backwoods is harsh, and so, as his family fights off wolves, bears, and even alligators, and faces failure in their tenuous subsistence farming, Jody must finally part with his dear animal friend. There has been a film and even a musical based on this moving story, a fine work of great American literature. |
| online onion root tips answers: Small-scale Aquaponic Food Production Christopher Somerville, Food and Agriculture Organization of the United Nations, 2015 This technical paper begins by introducing the concept of aquaponics, including a brief history of its development and its place within the larger category of soil-less culture and modern agriculture. It discusses the main theoretical concepts of aquaponics, including the nitrogen cycle and the nitrification process, the role of bacteria, and the concept of balancing an aquaponic unit. It then moves on to cover important considerations of water quality parameters, water testing, and water sourcing for aquaponics, as well as methods and theories of unit design, including the three main methods of aquaponic systems: media beds, nutrient film technique, and deep water culture. The publication discusses in detail the three groups of living organisms (bacteria, plants and fish) that make up the aquaponic ecosystem. It also presents management strategies and troubleshooting practices, as well as related topics, specifically highlighting local and sustainable sources of aquaponic inputs. The publication also includes nine appendixes that present other key topics: ideal conditions for common plants grown in aquaponics; chemical and biological controls of common pests and diseases including a compatible planting guide; common fish diseases and related symptoms, causes and remedies; tools to calculate the ammonia produced and biofiltration media required for a certain fish stocking density and amount of fish feed added; production of homemade fish feed; guidelines and considerations for establishing aquaponic units; a cost-benefit analysis of a small-scale, media bed aquaponic unit; a comprehensive guide to building small-scale versions of each of the three aquaponic methods; and a brief summary of this publication designed as a supplemental handout for outreach, extension and education. |
| online onion root tips answers: The Poisonwood Bible Barbara Kingsolver, 2009-10-13 New York Times Bestseller • Finalist for the Pulitzer Prize • An Oprah's Book Club Selection “Powerful . . . [Kingsolver] has with infinitely steady hands worked the prickly threads of religion, politics, race, sin and redemption into a thing of terrible beauty.” —Los Angeles Times Book Review The Poisonwood Bible, now celebrating its 25th anniversary, established Barbara Kingsolver as one of the most thoughtful and daring of modern writers. Taking its place alongside the classic works of postcolonial literature, it is a suspenseful epic of one family's tragic undoing and remarkable reconstruction over the course of three decades in Africa. The story is told by the wife and four daughters of Nathan Price, a fierce, evangelical Baptist who takes his family and mission to the Belgian Congo in 1959. They carry with them everything they believe they will need from home, but soon find that all of it—from garden seeds to Scripture—is calamitously transformed on African soil. The novel is set against one of the most dramatic political chronicles of the twentieth century: the Congo's fight for independence from Belgium, the murder of its first elected prime minister, the CIA coup to install his replacement, and the insidious progress of a world economic order that robs the fledgling African nation of its autonomy. Against this backdrop, Orleanna Price reconstructs the story of her evangelist husband's part in the Western assault on Africa, a tale indelibly darkened by her own losses and unanswerable questions about her own culpability. Also narrating the story, by turns, are her four daughters—the teenaged Rachel; adolescent twins Leah and Adah; and Ruth May, a prescient five-year-old. These sharply observant girls, who arrive in the Congo with racial preconceptions forged in 1950s Georgia, will be marked in surprisingly different ways by their father's intractable mission, and by Africa itself. Ultimately each must strike her own separate path to salvation. Their passionately intertwined stories become a compelling exploration of moral risk and personal responsibility. |
| online onion root tips answers: The Gillingham Manual Anna Gillingham, Bessie Whitmore Stillman, 1997 In this multisensory phonics technique, students first learn the sounds of letters, and the build these letter-sounds into words. Visual, auditory and kinesthetic associations are used to remember the concepts. Training is recommended. |
| online onion root tips answers: I Will Teach You to Be Rich: The Journal Ramit Sethi, 2022-09-13 A guided journal from the bestselling author of I Will Teach You to Be Rich, with inspiring questions and thought-provoking exercises to help you understand your own money behavior and create your vision of a Rich Life. |
Biology with Mrs. McGaffin - Home
Unit 5: Cell Division - dvusd.org
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 _____ will be visible. Although slicing the onion root …
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Online Lab - Onion Cell Root Tip
Cell Division: Mitosis in Onion Root Tips - Collea's Corner
BRING TO LAB: YOUR TEXTBOOK, WITH DIAGRAMS OF …
Scan your root tip cells at medium power under the microscope. Under high power, identify as many stages of mitosis as possible, using your text and the diagrams in the lab as guides.
Mitosis Lab Onion Root Tip Answers Full PDF - netsec.csuci.edu
understand your mitosis lab results using onion root tips, helping you ace that assignment and truly grasp the fascinating process of cell division. We'll delve into the key stages of mitosis, …
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Are you staring at a microscope slide, overwhelmed by the seemingly endless intricacies of onion root tips? Finding accurate and reliable answers online can feel like searching for a needle in a …
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Lab 9: Mitosis - California State University, Sacramento
Obtain 3‐4 root tips (or number provided by instructor). From the onion bulb soaking in water, simply cut 3‐4 roots about 1 cm from the tips and place them in a clean vial.
Lab Experiment: Mitosis in Onion Root Tip Cells and Mitotic …
Why onion root tip for lab experiment? L.S. of root apex showing terminal root cap and sub apical meristem. There are 3 zones (regions) near the tip of the onion root. Root cap: contains cells …
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Aug 16, 2014 · Step 1 Place the onion root tip in 12 M HCl for 4 minutes. Step 2 Transfer the tip to Carnoy's fixative for 4 minutes. Step 3 Label a clean slide and place the tip on the slide and …
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Lab: Mitosis in Onion Root Tip - Frontier Central School District
Lab: Mitosis in Onion Root Tip. B I O L O G Y. Background: Mitosis is considered nuclear division, since its main stages deal strictly with the nucleus and its contents (DNA). Mitosis consists of 4 …
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Obtain a prepared slide of an onion root tip (there will be three root tips on a slide). Hold the slide up to the light to see the pointed ends of the root sections.
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root cap I. Viewing mitosis in onion root tips. Why use onion roots for viewing mitosis? • The roots are easy to grow in large numbers. • The cells at the tip of the roots are actively dividing, and …
Observing Mitosis Lab
Obtain a prepared slide of an onion root tip (there will be three root tips on a slide). Hold the slide up to the light to see the pointed ends of the root sections.
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Regions of Onion Root tips There are three cellular regions near the tip of an onion root. 1. The root cap contains cells that cover and protect the underlying growth region as the root pushed …
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Put the onion root tips into a small dish of ethanoic acid for 10 minutes. Wash the root tips in cold water and dry them. Put the root tips into 25 cm3 hydrochloric acid that has been heated to 60 …
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online-onion-root-tips-answers 2 Downloaded from admissions.piedmont.edu on 2021-11-13 by guest colour presentation and motivating text design to encourage student enthusiasm Midaq …
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Jun 8, 2017 · Root tip squashes were then prepared and the mean mitotic index was calculated for each Agil concentration. The results are shown in the table. Agil concentration / ppm Mean …
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Nov 1, 2024 · May 7th, 2018 - Document Read Online Onion Root Whitefish Blastula Lab Answers Onion Root Whitefish Blastula Lab Answers In this site is not the same as a solution …
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root-tip cells of onion (Allium cepa). INTRODUCTION: The reason for using onion root tips for viewing mitosis – The roots are easy to grow in large numbers, the cells at the tip of the roots …
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herbicide Agil on mitosis in onion root tips. The roots of onions were exposed to different concentrations of Agil for 24 hours. Root tip squashes were then prepared and the mean …
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Onion Root Tip Meiosis Lab Answers and Bestseller Lists 5. Accessing Onion Root Tip Meiosis Lab Answers Free and Paid eBooks Onion Root Tip Meiosis Lab Answers Public Domain …
Activity: Demonstration of growth of roots in onion
The roots of the onion in the jar 1 would be longer whereas the growth of roots of onion in jar 2 stop after the root tips of the onion bulb in jar 2 have been cut. When the root tips are cut, the …
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Nov 12, 2024 · Vocabulary Practice Answers Biology Free HESI A2 Biology Practice Test. Exercises at Grammar Bytes. Kahoot Play this quiz now. work Dictionary Definition Vocabulary …
Allium Cepa (Onions) Root - African Journals OnLine
Irradiation of Root Tips: Roots of the onion bulbs were then uninterruptedly exposed to radiation from the projector (DELL 121 Os) at distances and durations given in table 1 according to the …
Mitosis Lab Onion Root Tip Answers Full PDF - netsec.csuci.edu
comprehensive overview of the mitosis lab, providing answers to common questions and empowering you to succeed in your studies. FAQs 1. Why is the onion root tip used for …
COMPARING ONION WITH WHEAT Ruth Hutson Blue Valley …
Online Onion Root Tips Determining time in different phases of the cell cycle Growth in an organism is carefully controlled by regulating the cell cycle. In plants, the roots continue to …
Mitosis in Onion Root Cells Lab - science with mrs. h
6. The prepared slide has 3 onion root tips on it. Move the slide to one other root tip and repeat steps 3 and 4. 7. Complete your data table by doing the following calculation: To find the …
Experiment: Practice on mitotic cell division using onion root …
of mitosis. The onion root tips can be prepared and squashed in a way that allows them to be flattened on a microscopic slide, so that the chromosomes of individual cells can be observed …
Allium Cepa (Onions) Root - African Journals OnLine
Irradiation of Root Tips: Roots of the onion bulbs were then uninterruptedly exposed to radiation from the projector (DELL 121 Os) at distances and durations given in table 1 according to the …
Cytotoxic effect of Van Tulsi (Ocimum gratissimum) leaf …
Onion Root Tip Cells at 72 hrs and 96 hrs in Control and Van Tulsi (5%) Leaf extract Treated group 4. RESULT AND DISCUSSION: In 72 hrs treatment duration there is no significant …
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Check your answers if you have time at the end. Pearson Edexcel International ... The student determined the mitotic index of cells at five distances from an onion root tip. She repeated this …
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C ut a 5mm sample of the root tip using a scalpel . 2. Transfer root tip to sample tubes containing HCl and leave for 5 minutes. 3. Transfer to watch glass containing cold distilled water. Leave …
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Feb 21, 2024 · Onion Root Tip Mitosis Lab Answers Getting the books onion root tip mitosis lab answers now is not type of challenging means. In plant cell, which is onion root tip cell, the cell …
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Answers cariha de. Online Onion Root Tip Mitosis Lab Answer Key fullexams com. Onion Root Cell Cycle Lab Answers SchoolWorkHelper. Mitosis Amazon Simple Storage Service. ...
Observing Cell Division Looking at Onion Root under the …
Observing Cell Division – Looking at Onion Root under the Microscope p. 47 Answers a) Onion root tip (and whitefish embryos) are used because these tissues are growing fast and will have …
Mitosis in Onion Root Tip Cells - Tishk International University
o Allow the root tips to remain in the vial for one complete day o With the help of forceps, pick one root and set in on a new glass slide o With the help of a dropper, allow one drop of N/10 HCl to …
Using a Microscope to View the Phases of Mitosis
8) Click on the Onion Root slide. It will automatically be placed on the stage of the microscope. 9) Follow the steps you learned in the previous lab to view the onion cells using different …
Cell Cycle and Mitosis QP - Physics & Maths Tutor
(e) A scientist treated growing tips of onion roots with a chemical that stops roots growing. After 24 hours, he prepared a stained squash of these root tips. Figure 2 is a drawing showing the …
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May 26, 2024 · Root Tip Mitosis Answer Sheet risewell solutions. Observing Mitosis Lab Awesome Science Teacher Resources. Onion Root Tips Phases of Mitosis Worksheet for 7th …
Induction of chromosome aberrations in L. root tips on …
onion bulbs were suspended in 10%, 5%, 1%, and 0.5% concentrations (v/v) of each of the wastewater samples and the control for 48 h, at the end of which root tips from these bulbs …
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Aug 29, 2024 · 'Online Onion Root Tips The Biology Project April 29th, 2018 - The Biology Project gt Cell Biology gt Intro to Onion Root Tips Activity gt Activity Online Onion Root Tips …
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Feb 16, 2017 · described variations of the onion root tip lab with varying degrees of sophistication. For example, Woodard (1948) sets forth a number of detailed procedures for preparing cells …
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The College Board. Online Onion Root Tips The Biology Project. Quia. Biology 9780078802843 Homework Help and Answers. MCAS Test Questions Massachusetts Comprehensive. …
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Onion Root Tip Mitosis Lab Answers onion root tip mitosis - stages, experiment and results Because of the rapid rate at which ... online onion root tips - university of arizona In this …
Onion Root Tip Analysis Lab Stages of Mitosis - Denton ISD
Microscope, prepared slide or picture card of onion root tip or whitefish blastula, textbook, lab worksheet, pencil Procedure( if using picture cards, skip to step #5): 1. Set up a compound …
Root Tip Mitosis Answer Sheet - stitdusar.ac.id
Mar 5, 2024 · 'Online Onion Root Tips Loudoun County Public Schools ... 'Onion Root Cell Cycle Lab Answers SchoolWorkHelper May 19th, 2001 - Mitosis is the division of the nucleus to form …
Pre-lab Homework Lab 2: Mitosis and the Cell Cycle - PCC
onion root tip, the entire cell cycle takes about 12 hours (depending on the plant’s health and where you are looking in the root). We will use 12 hours (720 minutes) as a rough estimate. 6. …
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Online Onion Root Tips Answers The Theory and Practice of Online Learning Terry Anderson 2008 "Neither an academic tome nor a prescriptive 'how to' guide, The Theory and Practice of …
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Onion root tip meiosis lab answers online onion root tips university of arizona 1 9 mitosis and meiosis biology libretexts lab 3 mitosis and meiosis escience labs studocu onion root tip …
Evaluation of cytotoxicity induced by cypermethrin on onion …
species (ROS) in onion root cells. These findings underscore the cytotoxic potential of cypermethrin in plant systemsand highlight the need for further research on its environmental …
Genotoxicity Induced by Food Coloring Dyes on Meristematic …
treating of the onion root tips with 2% acetocaramine. The root tip was placed on glass slide and a drop of acetocaramine stain is added again once the squashing is done. The slide is then …
Electron Microscope Studies on the Normal and …
STUDIES ON MITOSIS IN ONION ROOT TIPS exposed to these solutions for periods of 30, 45, 60, and 120 minutes. The root tips were then excised, fixed, and processed as described …
ENVIRONMENTAL EFFECTS ON MITOSIS AP* Biology Big Idea …
Onion root tips, control treatment, 3 Paper towels . Onion root tips, IAA treatment, 3 Pencil with eraser . Carbol fuchsin stain solution, 2 mL Permanent marker or wax pencil . Deionized water …
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Oct 14, 2024 · 4 4 Onion Root Tip Meiosis Lab Answers 2020-09-25 along with the major events that occur during each phase.Online Onion Root Tips - University of ArizonaAP Biology
Different Stages Of Mitosis In Onion Root Tip Diagram
Duration of the Several Mitotic Stages in the Dividing Root-tip Cells of the Common Onion Harry Hamilton Laughlin,1919 Cell and Molecular Biology P. K. Gupta,2005-12 ICSE Biology Book-II …
Genotoxicity of hormoban and seven other pesticides to …
Root tips 1 - 2 cm long were cut from the germinated seeds and placed in a small glass specimen bottle and fixed in acetic alcohol (ethanol : glacial acetic acid in 3:1 ratio) for 24 h in a fridge at …
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We offer one online section of our Introduction to Biological Science course for majors (BIOL 121), however, we ... had a choice of answers and one that allowed for written responses. The five …
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Oct 10, 2024 · Onion Root Tip Meiosis Lab Answers 1 Onion Root Tip Meiosis Lab Answers Onion Root Tip Meiosis Lab Answers Downloaded from appleid.tenorshare.com by guest …
Mitosis under the Microscope - HULSE'S CLASS
7. If an Onion Root Cell took 24 Hours to complete its Cell Cycle, how many hours would it be in each phase? (base your calculations on the computer simulation data) 8. Why were onion root …
Onion Root Tip Meiosis Lab Answers - insys.fsu.edu
To Tell If An Onion Is Bad (+ Storage Tips) appeared first on Cooking Chew. how to tell if an onion is bad (+ storage tips) NCERT Class 12 Biology Lab Manual PDF: The National Council …
CYTOGENETICAL STUDIES ON THE EFFECT OF OMNACORTIL …
In the present work, onion root tips were subjected with a series of omnacortil concentrations, ranging from 0.2 µg/ml, 0.4 µg/ml, 0.6 µg/ml, 0.8 µg/ml and 1.0 µg/ml for 24 hours for studying …
Practical 8 - Broad bean root tip squash Intended learning …
5. Using a mounted needle or similar, carefully remove one of the root tips. The root tips will now be very soft and easily damaged so do not remove them with forceps. 6. Leave the remaining …
Onion root mitosis - QUBES Hub
Root Tip Mitosis Page - rtm2 Region of cell elongation Region of cell division Protective root cap I. Viewing mitosis in onion root tips. Why use onion roots for viewing mitosis? •The roots are …
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viewing mitosis in an onion root tip because the cells at the tip of the roots are actively dividing and many cells will be in stage of mitosis.Also,the roots are easy to grow in large numbers …
