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Q.Draw a neat diagram of L.S. of a flower.

Goa GbshseGBSHSE Class 12 Board Exam 2019Subjective· 2mImportance★★★★★
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Figure — A hard draw-gate for the L.S. of a flower; catalog figure 1-1 is a longitudinal section of a typical flower sh
Figure — A hard draw-gate for the L.S. of a flower; catalog figure 1-1 is a longitudinal section of a typical flower sh

This is a diagram-based question; below is the full labelled structure a correct L.S. of a flower should show, part by part, from the base upward.

Since this platform is text-based, here is the complete structure to draw/label, moving from the base of the flower to its tip:

  1. Pedicel — the stalk that attaches the flower to the main plant axis.
  2. Thalamus (receptacle) — the swollen tip of the pedicel on which all the floral whorls are borne.
  3. Calyx (sepals) — the outermost whorl, usually green, protecting the bud.
  4. Corolla (petals) — the next whorl, often brightly coloured, attracting pollinators.
  5. Androecium (stamens) — the male whorl; each stamen has a filament topped by a bilobed anther (each lobe with two microsporangia/pollen sacs), shown in longitudinal section with a central connective.
  6. Gynoecium (pistil/carpel) — the innermost, female whorl, shown centrally, differentiated (top to bottom) into:
    • Stigma — the receptive tip for pollen germination.
    • Style — the elongated stalk connecting stigma to ovary. …

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