Take one flower each of families Fabaceae and Solanaceae and write its semi – technical description. Also draw their floral diagrams after studying them.

Asked by Pragya Singh | 11 months ago |  175

1 Answer

Solution :-

Characters of Fabaceae

  • They are trees, shrubs herbs having roots with root nodules.
  • Stems are erect or climber
  • Leaves are alternate, pinnately compound or simple and leaf base are pulvinate; stipulate with reticulate venation.
 
Inflorescence: racemose

Flower: bisexual, zygomorphic

Calyx: sepals five, gamosepalous; valvate/imbricate aestivation

Corolla: petals five, polypetalous, papilionaceous, consisting of a posterior standard, two lateral wings, two anterior ones forming a keel (enclosing stamens and pistil), vexillary aestivation

Androecium: stamens ten in number, diadelphous, anther dithecous

Gynoecium: ovary superior, monocarpellary, unilocular with many ovules, style single

Fruit: legume; seed: one to many, non-endospermic

Economic importance:

Plants of these families are pulses used as fodder and sweet pea.

Ex: Peas, trifolium,

Floral diagram:

Characters of Solanaceae

  • Commonly termed as potato family, Solanaceae are mostly herbs, shrubs and rarely small trees
  • Stems are herbaceous rarely woody, aerial; erect, cylindrical, branched, solid or hollow, hairy or glabrous,

underground stem in potato.

  • Leaves are alternate, simple, rarely pinnately compound, exstipulate with reticulate venation.
Floral Characters

Inflorescence: Solitary, axillary or cymose as in Solanum

Flower: bisexual, actinomorphic

Calyx: sepals five, united, persistent, valvate aestivation

Corolla: petals five, united; valvate aestivation

Androecium: stamens five, epipetalous

Gynoecium: bicarpellary obligately placed, syncarpous; ovary superior, bilocular, placenta is swollen with many ovules, axile

Fruits: berry or capsule

Seeds: many, endosperms

Economic importance

Plants belonging to this family are used as food, spices, medicines and ornamentals

Floral diagram:

Ex: Brinjal, chilli, ashwagandha, petunia

Answered by Abhisek | 11 months ago

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