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    Question ID:   8844         Current Version: 1
Question: How are plants classified?
Category: Science > Botany
Keywords: group, category, type, classify, classification, plant
Type: how
Rating:(1 ratings)    Views: 2330    Discussions: 0   In Watch Lists: 1  

 
    Answer:
Plants are organisms which belong to the plant kingdom. Commonly multicellular, plants produce energy to grow and reproduce by converting light energy radiated from the sun into food through the process of photosynthesis.

Plants can be classified as either vascular or nonvascular. Vascular plants have a specialized conductive system known as vascular bundles, a group of specialized cells made up of xylem and phloem. Nonvascular plants lack these conducting tissues.

Vascular plants include club mosses, ferns, cycads, gymnosperms, and angiosperms.

  • Club mosses : Primitive vascular plants also known as lycopods.
  • Ferns and fern allies: Spore-bearing, vascular plants having leaves known as fronds.
  • Cycads: Among the oldest plants, Cycads bear resemblence to palms and are native in South America, Africa, and Australia.
  • Gymnosperms: Seed-bearing woody vascular plants, such as the conifers (pine, spruce, fir, etc.), whose seeds are not enclosed in an ovary or fruit, but are exposed.
  • Angiosperms: Flowering plants that periodically produce flowers which have various parts including sepals, petals, stamens, and carpels.

Nonvascular plants include liverworts, hornworts, and mosses.

  • Mosses: Simple green land plants, member of the phyla Bryophyta, along with liverworts and hornworts. They have leaves and a stem, but always lack roots.
  • Liverworts and hornworts: Simple green land plants of the phyla Bryophyta with leaves and a stem and always without roots.
Source: National Biological Information Infrastructure
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