Origin, Evolution & Related Theories of Angiosperms-I by Dr. V. D. Devarkar скачать в хорошем качестве

Origin, Evolution & Related Theories of Angiosperms-I by Dr. V. D. Devarkar

Angiosperms, commonly known as flowering plants, are the most diverse and dominant group of plants on Earth. Their origin and evolution have fascinated scientists for many years, leading to the development of various theories to explain their emergence and diversification. Origin of Angiosperms: The origin of angiosperms is still a subject of debate. Fossil evidence suggests that they first appeared during the Early Cretaceous period, around 140 million years ago. However, the precise origin and ancestral group from which angiosperms evolved remain uncertain. Anthophyte Theory: The anthophyte theory proposes that angiosperms evolved from a group of extinct plants called anthophytes. Anthophytes are considered the closest relatives of angiosperms and are characterized by some shared characteristics. This theory suggests that angiosperms emerged from anthophytes through significant evolutionary innovations. Basal Angiosperm Hypothesis: The basal angiosperm hypothesis suggests that the first angiosperms were primitive and had characteristics resembling basal or early-diverging lineages of living angiosperms. This hypothesis proposes that these early angiosperms had features like magnoliids or similar groups. These theories provide different perspectives on the origin and evolution of angiosperms. It is important to note that our understanding of angiosperm evolution is continuously evolving as new discoveries are made and more comprehensive data become available. Further research, including studies of fossils, comparative genomics, and molecular phylogenetics, is shedding light on the evolutionary history of angiosperms. #AngiospermOrigin #AngiospermEvolution #AnthophyteTheory #BasalAngiospermHypothesis #CoevolutionaryHypothesis #EcologicalOpportunism #FloweringPlants #PlantEvolution #Botany #ScientificTheories #botany #plantscience #vinoddevarkar #devarkar #scscobotany #scsco #omerga #umarga #shivajicollegeomerga #plantdecription #morphology #anatomy #reproduction #angiosperms #biodiversity #taxonomy #ecology #palynology #origin #evolution