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Scientific drawing

Floral Diagrams and Floral Formulae

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Understand the structure of a flower, and how to interpret and construct basic floral diagrams. Identify the number and features of each whorl in fuschia and geranium flowers, and construct the correct floral formulae.

Learning outcomes

  • Identify the four main whorls of a flower
  • Interpret and construct key aspects of floral diagrams
  • Interpret and construct key aspects of floral formulae
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Obtaining and Recording Data

  • How to identify and represent diagrammatically the number, size regularity, spacing and arrangement of sepals
  • How to identify and represent diagrammatically the number, size regularity and arrangement of petals 
  • How to identify and represent diagrammatically the number and arrangement of anthers
  • How to identify and represent diagrammatically the number and arrangement of the gynoecium carpels
  • What information can be represented by a floral formula

Interpreting and Analysing Data

  • How to interpret a floral diagram to construct a floral formula

Concepts, Principles and Theories

  • What is meant by a whorl and how do the key parts of a flower arrange into whorls

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