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Anatomy of Flowering Plants — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYAnatomy of Flowering Plants5 Marks
Question
What is a semi-technical description of a flowering plant?
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Answer

Semi-technical description of a typical flowering plant:

  1. The description has to be brief, in a simple and scientific language and presented in a proper sequence.
  2. The plant is described beginning with its habit, vegetative characters -roots, stem and leaves and then floral characters inflorescence and flower parts.
  3. After describing various parts of plant, a floral diagram and a floral formula are presented. The floral formula is represented by some symbols.

  1. Fusion is indicated by enclosing the figure within bracket and adhesion by a line drawn above the symbols of the floral parts.

Structure of Floral Diagram:

  1. A floral diagram provides information about the number of parts of a flower, their arrangement and the relation they have with one another.
  2. The position of the mother axis with respect to the flower is represented by a dot on the top of the floral diagram.
  3. Calyx, corolla, androecium and gynoecium are drawn in successive whorls, calyx being the outermost and the gynoecium being in the centre.

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