Waec Model Questions Vol1 2021 Biology Question 2

Practice practical question 2 from the 2021 Waec Model Questions Vol1 Biology examination. This question covers Cell Division .

Waec Model Questions Vol1 2021 Biology Practical

Topic: Cell Division

Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • practical

A student investigates cell division in the root tip of a fast‑growing bean (Phaseolus vulgaris) using a fresh squash preparation stained with acetocarmine.

Question Parts

( a )

Describe the procedure for preparing a fresh squash of the root tip suitable for observing mitosis.

( b )

The student counts a total of 500 cells in five randomly selected fields of view. The numbers of cells in each phase of mitosis observed are: prophase 120, metaphase 80, anaphase 60, telophase 40, and interphase 200. Calculate:

( ) The mitotic index (percentage of cells undergoing mitosis).

( ) The percentage of cells in each mitotic phase (prophase, metaphase, anaphase, telophase).

( c )

Based on the percentages obtained, discuss what the results suggest about the growth activity of the root tip.

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About This Question

This is Waec Model Questions Vol1 2021 Biology Question 2. It is one of the practical questions from the 2021 Waec Model Questions Vol1 Biology examination.

The question covers Cell Division .

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