Igcse Model Questions Vol1 2019 Biology Question 2
Practice practical question 2 from the 2019 Igcse Model Questions Vol1 Biology examination. This question covers Cell Division, Mitosis, Microscopy, Data Analysis .
A sample of rapidly growing onion (Allium cepa) root tip is fixed in Carnoy's solution and stained with 2% aceto‑orcein. Under a light microscope you examine five fields and record the number of cells observed in each stage of mitosis as shown. | Field | Prophase | Metaphase | Anaphase | Telophase | Interphase | |-------|----------|-----------|----------|-----------|------------| | 1 | 12 | 8 | 5 | 4 | 71 | | 2 | 10 | 9 | 6 | 5 | 70 | | 3 | 11 | 7 | 4 | 6 | 72 | | 4 | 13 | 8 | 5 | 5 | 69 | | 5 | 9 | 10 | 5 | 4 | 71 | Assume that the five fields together represent a random, unbiased sample of the root‑tip cells.
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This is Igcse Model Questions Vol1 2019 Biology Question 2. It is one of the practical questions from the 2019 Igcse Model Questions Vol1 Biology examination.
The question covers Cell Division, Mitosis, Microscopy, Data Analysis .
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