Neco Model Questions Vol1 2019 Biology Question 2

Practice practical question 2 from the 2019 Neco Model Questions Vol1 Biology examination. This question covers Cell Division .

Neco Model Questions Vol1 2019 Biology Practical
Topic: Cell Division
Question 2 NECO_MODEL_QUESTIONS_VOL1 • 2019 • BIOLOGY • practical

A sample of rapidly growing root tip of a garden pea (Pisum sativum) is collected, fixed, stained with Feulgen stain, and a slide is prepared. Under the microscope, a student examines five fields of view and records the number of cells in each stage of mitosis as shown in the table below. Field | Prophase | Metaphase | Anaphase | Telophase | Interphase ------|----------|-----------|----------|-----------|----------- 1 | 12 | 8 | 5 | 3 | 22 2 | 10 | 9 | 6 | 4 | 21 3 | 11 | 7 | 5 | 2 | 25 4 | 13 | 8 | 4 | 3 | 22 5 | 9 | 10 | 7 | 5 | 19

Question Parts

( a )
Calculate the total number of cells observed and the total number of cells in mitosis (i.e., sum of prophase, metaphase, anaphase and telophase) across all fields.
( b )
Determine the mitotic index (percentage of cells in mitosis) for the sample. Show your calculation.

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About This Question

This is Neco Model Questions Vol1 2019 Biology Question 2. It is one of the practical questions from the 2019 Neco Model Questions Vol1 Biology examination.

The question covers Cell Division .

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