Consider the following plants:

  1. Groundnut
  2. Horse-gram
  3. Soybean

How many of the above belong to the pea family?

(a) Only one
(b) Only two
(c) All three
(d) None

Correct Answer: (c) All three

Explanation:

  • Groundnut (Peanut):
    • Scientific NameArachis hypogaea
    • Family: Fabaceae (Leguminosae)
    • Details: Groundnut is a legume of the pea family, grown for its edible seeds and known for its nitrogen-fixing ability, which enriches the soil.
  • Horse-gram:
    • Scientific NameMacrotyloma uniflorum
    • Family: Fabaceae (Leguminosae)
    • Details: Horse-gram is a legume native to tropical southern Asia, known for its nutritional and medicinal properties, and is part of the Fabaceae family.
  • Soybean:
    • Scientific NameGlycine max
    • Family: Fabaceae (Leguminosae)
    • Details: Soybean is a species of legume native to East Asia, widely grown for its edible bean and numerous uses, and belongs to the Fabaceae family.

Learn more:

Fabaceae Family

  • Overview:
    • Also known as Leguminosae or pea family.
    • Includes trees, shrubs, and herbaceous plants.
    • Third-largest family of flowering plants with about 20,000 species.
  • Characteristics:
    • Leaves: Usually pinnately compound, sometimes trifoliate or palmate.
    • Flowers: Typically have five petals and sepals, often with vexillary aestivation.
    • Fruit: Typically a legume or pod that splits open to release seeds.
  • Economic Importance:
    • Nitrogen Fixation: Plants in this family have root nodules with nitrogen-fixing bacteria, enriching the soil.
    • Food Source: Includes important crops like peas, beans, lentils, peanuts, and soybeans, which are rich in protein.
    • Industrial Uses: Oils from soybeans and groundnuts are used in cooking and various industrial applications.
    • Medicinal Uses: Some plants have medicinal properties and are used in traditional medicine.
  • Ecological Role:
    • Soil Enrichment: Improves soil fertility through nitrogen fixation.
    • Biodiversity: Supports a wide range of insects and animals, contributing to ecosystem health.

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