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CP3: Mitosis in Root Tip

Prepare and observe a root tip squash to identify stages of mitosis

Required PracticalEdexcelA-Level

🔬 Equipment Required

  • Root tips (garlic or onion)
  • Microscope slides
  • Cover slips
  • Aceto-orcein stain
  • Hydrochloric acid
  • Watch glass
  • Forceps
  • Mounted needle
  • Light microscope
  • Filter paper

🦺 Safety Precautions

  • Wear safety goggles
  • HCl is corrosive
  • Stain may be toxic
  • Handle glass carefully

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About CP3: Mitosis in Root Tip

CP3: Mitosis in Root Tip is a required practical for Edexcel A-Level Biology. This practical prepare and observe a root tip squash to identify stages of mitosis

Students are expected to understand the method, identify and control variables, use appropriate equipment, analyse results, draw graphs, identify sources of error, suggest improvements, and consider safety precautions.

Questions on required practicals frequently appear in Edexcel A-Level Biology exams and can be worth significant marks. Practice with our AI-generated questions to master this practical.

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