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What are the major divisions in the Plantae? What is the basis for these divisions?
Answer:
Classification of Plant Kingdom:
- Plantae includes multicellular organisms except for some primitive relative of algae.
- All Plants and trees come under this kingdom
- They are eukaryotes, that is, their each cell has a nucleus and membrane bound cellular organelles.
- All of them are autotrophic with chloroplast in their cell to perform photosynthesis.
The plant kingdom is classified into two major divisions as Cryptogams and Phanerogams.
|
Division |
Basis of Classification |
|
Thallophyta or Algae Example- Algae |
Body is not differentiated into leaf and stem. |
|
Bryophyta Example- Hornworts, liverworts and mosses |
Body is divided into leaf and stem |
|
Pteridophyta Example: Horsetails, ferns |
Body is divided into root, stem and leaf |
|
Gymnosperm Example: Conifers, ginkgo |
Seed bearing, naked seeds |
|
Angiosperm Example: Rose, lilies |
Seed bearings covered seeds |
