Systematics_of_Plants_ Presentation.pptx

Systematics_of_Plants_Presentation.pptx

1. Systematics of Plants An Overview of Plant Classification and Evolutionary Relationships

2. Introduction - Systematics is the scientific study of classification, relationships, and evolution of plants. - It includes taxonomy, phylogenetics, and nomenclature. - Helps in understanding plant biodiversity and evolutionary history.

3. Branches of Plant Systematics - Taxonomy: Identification, naming, and classification of plants. - Phylogenetics: Evolutionary relationships among plant species. - Nomenclature: Standardized naming system following ICN (International Code of Nomenclature).

4. Classification Systems - Artificial System: Based on a few superficial traits (e.g., Linnaeus’ system). - Natural System: Considers overall similarities (e.g., Bentham and Hooker’s system). - Phylogenetic System: Based on evolutionary history (e.g., APG system).

5. Hierarchical Classification - Kingdom: Plantae - Division (Phylum): E.g., Bryophyta, Pteridophyta, Angiosperms, Gymnosperms - Class, Order, Family, Genus, Species (Binomial Nomenclature)

6. Tools in Plant Systematics - Morphological Studies: External plant characteristics. - Molecular Systematics: DNA sequencing to determine relationships. - Chemotaxonomy: Use of chemical compounds for classification. - Palynology: Study of pollen and spores.

7. Angiosperm Phylogeny Group (APG) - Modern system based on molecular data. - APG IV (latest version) classifies flowering plants based on genetic relationships. - Improves understanding of plant evolution and classification.

8. Importance of Plant Systematics - Helps in identifying and conserving plant species. - Aids in agriculture, forestry, and medicine. - Essential for ecological studies and biodiversity conservation.

9. Conclusion - Plant systematics is crucial for understanding plant diversity and evolution. - Advances in molecular techniques have improved classification accuracy. - Continued research is essential for conservation and sustainable utilization of plant resources.

10. References - Include scientific journals, textbooks, and online databases for further reading.