... length, from each seedling,. Using a mounted needle, place the root tips ion a covered watch glass containing a mixture of concentrated hydrochloric acid and absolute alcohol in equal volumes. Leave for 5 to 10 minutes. 2. Transfer the root tips to another covered watch glass containing 45% glacial acetic acid. Leave for 5 minutes. 3. Place a root tip on a microscope slide, which has been kept in 70% alcohol and cleaned with lens tissue. Cover the tip with a drop of acetic orcein and crush thoroughly for 2 to 3 minutes with a glass rod. Do not allow the material to dry up. 4. Place a cover slip on the slide, tap all over the cover slip, and gently squash the preparation by, pressing down on the cover slip through layers of filter paper. Label the slide. 5. Examine under the microscope the microscope and identify the main stages of mitosis. Results Concentration 0.002 0.0015 0.001 0.005 0.0000 Length of ...

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