Igcse Model Questions Vol1 2021 Biology Question 1

Practice practical question 1 from the 2021 Igcse Model Questions Vol1 Biology examination. This question covers Cell Structure .

Igcse Model Questions Vol1 2021 Biology Practical

Topic: Cell Structure

Question 1 IGCSE_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • practical

A student examines a prepared slide of an onion epidermal cell using a compound microscope. The microscope has an ocular lens of 10× magnification and the 40× objective lens is used. The scale in the eyepiece reticle indicates that 1 mm on the reticle corresponds to 0.025 mm on the specimen at this magnification.

Question Parts

( a )

Calculate the total magnification of the microscope.

( b )

If a cell measures 12 mm on the reticle, determine its actual length in millimetres.

( c )

Draw a labelled diagram of a typical plant cell, indicating at least five structures and state one function for each structure.

( d )

Suggest two possible sources of error that could affect the measurement in part (b) and propose one way to minimise each error.

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About This Question

This is Igcse Model Questions Vol1 2021 Biology Question 1. It is one of the practical questions from the 2021 Igcse Model Questions Vol1 Biology examination.

The question covers Cell Structure .

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