~Plant Evolution~

• A plant is an organism in the kingdom Plantae. According to the five-kingdom classification system used by most biologist.
  

• Plants have following characteristics :

1. Plants are multicellular during part of life.
2. Plants are eukaryotic (in their cell have nuclei).
3. Plants reproduce sexually.
4. Plants have chloroplast with chlorophyll-a, chlorophyll-b and carotenoids as photosynthetic pigments.
   
5. Plants have cell walls with cellulose (a complex carbohydrate).
6. Plants have life cycle with alternation of a sporophyte phase and a gametophyte phase.
   
7. Plants develop organs which become specialized for photosynthesis, reproduction or mineral uptake.
8. Most live on land during their life cycle.

Variety Of Plants

• Plants can be divided according to their characteristics. As for example, we used to have :

• Monocotyledon Plants

• Dicotyledon Plants

• Non-vascular Plants

• Vascular Plants