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ONION | allium cepa

Classification

  • Kingdom - Plantae

  • Division - Angiospermae

  • Class - Monocotyledonae

  • Order - Liliales

  • Family - Liliaceae

  • Genus - Allium

  • Scientific name - Allium cepa

A cut section of an Onion bulb
Onion

Important points

  • Onion consist of both aerial and underground stem.

  • The underground stem is highly reduced into a condensed disc shaped structure called Bulb.

  • The scale leaves arising from the bulb are modified to store food and become fleshy.

  • The fleshy scale leaves are surrounded by a thin papery outer scale called Tunic that prevents it from drying out. This type of bulb is called Tunicated bulb.

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