Taxonomy: Evolution at Work
Taxonomy: Evolution at Work unfolds as a story explaining the strategies in which the different plant groups evolved over time and their struggle for survival by developing new and better characters. The problems faced by the primitive group of land plants are explained and the methods by which the plants intelligently outwitted the adversaries such as insects, herbivores, parasites etc. or adverse environmental situations are described. The adaptations thus achieved by the plants made them an evolved taxon. The plants of this taxon, in turn, when faced by new unfavorable situations, elaborated still better characters and formed a third taxon. Similarly fourth, fifth and the n th taxa evolved. All plant groups are described in terms of their successful adaptational characters (intelligence!) and the study of these processes is the study of evolution at work and this is precisely the subject of taxonomy.
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acid alkaloids Angiosperms anthelmintic anthers aromatic Asia axile placentation bark contains basal bicarpellary bilocular Biopesticides bisexual bracts calyx carpels color common compounds connate corolla cultivated dioecious disc diuretic drug edible endosperm evolutionary Exceptional Genera expectorant extract family contains female flowers flavones flavonoids fleshy Flower L.S. fruit genera containing glycosides Gynoecium habit herbaceous hypanthium India inflorescence insecticidal insects large number latex laticiferous leaf leaves yield limonene Linn lobes locule Magnoliidae male flowers Medicinal plants mucilage native Natural Dyes nectary oil consisting Order ovary Ovary T.S. ovules P-sitosterol parietal placentation perianth petalloid petals pollen primitive protein quercetin reduced resin rheumatism rhizome Roots contain Roxb saponins Seeds yield sepals sesquiterpene shrubs simple leaves single genus skin diseases species included stamens staminodes stem stigma subclass syncarpous tannins tepals tonic toxic tree tropical tube tubers unilocular ovary unisexual flowers volatile oil whole plant whorls wood woody yellow zygomorphic