Neco Model Questions Vol1 2020 Biology Question 1

Practice practical question 1 from the 2020 Neco Model Questions Vol1 Biology examination. This question covers Cell Structure .

Neco Model Questions Vol1 2020 Biology Practical

Topic: Cell Structure

Question 1 NECO_MODEL_QUESTIONS_VOL1 • 2020 • BIOLOGY • practical

You are given a prepared slide of an onion (Allium cepa) epidermal peel stained with iodine. Using a compound microscope at 400×, answer the following.

Question Parts

( a )

List three distinct cell structures that can be observed in the field of view and give one function for each.

( b )

Explain why the cell wall appears as a clear outline while the nucleus appears as a dark stained region.

( c )

Suggest two precautions that should be observed when preparing the slide to avoid artefacts.

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About This Question

This is Neco Model Questions Vol1 2020 Biology Question 1. It is one of the practical questions from the 2020 Neco Model Questions Vol1 Biology examination.

The question covers Cell Structure .

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