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Edexcel A-Level Biology AS 4.6 Core Practical 7 Plant Tissue Microscopy Questions

Practise preparing, viewing, drawing and labelling plant tissue sections using low-power plans and accurate microscopy conventions.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • describe preparing a thin root, stem or leaf section with stain, slide and coverslip
  • draw low-power plan diagrams with correct proportions, tissue layers and no individual cells

Edexcel A-Level Biology AS 4.6 Core Practical 7 Plant Tissue Microscopy Questions question 1

[Maximum number: 8]

A student used a microscope to study the tissues in a plant stem and the cell of an animal.

The photograph shows a vascular bundle in a transverse section of the plant stem, as seen using a light microscope.

Figure for Question Edexcel A-Level Biology AS 4.6 Core Practical 7 Plant Tissue Microscopy Questions question 1 — Edexcel A-Level Biology AS

Question (a)

(a)

Describe how you would use the information in the photograph to identify structures A and C .

[ 2 ]

Question (b)

(b)

A longitudinal section was taken through one of the labelled tissues A, B or C. The photograph shows a view of some of the cells in this tissue, as seen using a light microscope.

Figure for Question (b) — Edexcel A-Level Biology AS

Deduce which of the tissues A, B or C these cells come from.

[ 3 ]

Question (c)

(c)

In another part of the investigation, a plan of the tissues in the stem was drawn.

Figure for Question (c) — Edexcel A-Level Biology AS

Describe how a thin section of a stem could be prepared and viewed using a light microscope, in order to draw this plan.

[ 3 ]
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