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5 marksCell Structure and Functions

CAPE Biology Unit 1 · May/June 2022 · Paper 2 · Question 1(a)(i)

A light micrograph of a cross section through a dicot root is provided showing regions labelled W, X, Y, and Z.

In the space provided, construct a plan diagram to show at least the FOUR major tissues labelled W, X, Y and Z in the light micrograph in Figure 1.

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Other parts of this question

  1. 1(a)(ii)State the function of the structures labelled W, X, Y and Z in Figure 1 on page 4.[4 marks]
  2. 1(a)(iii)Explain why the dicotyledonous root of a plant is considered an organ.[3 marks]
  3. 1(b)(i)Outline the basis of the endosymbiont theory.[2 marks]
  4. 1(b)(ii)Complete the table by indicating whether the following features are present, absent or sometimes present in a eukaryotic cell and a prokaryotic cell: Plasmid,…[4 marks]
  5. 1(c)Explain the impact of the following factors on enzyme action using the information provided in Figure 2: pH, Temperature, Enzyme concentration, Substrate…[12 marks]

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