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2 de mai. de 2024 · Evidence of the emergence of embryophyte land plants first occurs in the middle Ordovician (~ 470 million years ago ), and by the middle of the Devonian (~ 390 million years ago ), many of the features recognised in land plants today were present, including roots and leaves.
19 de abr. de 2024 · Plant, any multicellular, eukaryotic, usually photosynthetic life-form in the kingdom Plantae. There are an estimated 390,900 different species of plants known to science. Learn more about the plant kingdom, including the life and evolutionary histories and physical characteristics of the major plant groups.
Há 4 dias · The history of botany examines the human effort to understand life on Earth by tracing the historical development of the discipline of botany—that part of natural science dealing with organisms traditionally treated as plants.
29 de abr. de 2024 · In this text, we present a history of plant anatomy with emphasis on the scientists, their discoveries, and works from antiquity to modern times that contributed to the development and progress of this fundamental area of the Scientia Amabilis.
Há 2 dias · Almost every plant we eat has a flower, and flowering plants populate every corner of the planet. But many questions remain about how and when this vast group emerged throughout the history of ...
19 de abr. de 2024 · Origins of agriculture, the active production of useful plants or animals in ecosystems that have been created by people. Agriculture has often been conceptualized narrowly, in terms of specific combinations of activities and organisms—wet-rice production in Asia, wheat farming in Europe, cattle.
Há 1 dia · Fossilised spores suggest that land plants (embryophytes) have existed for at least 475 million years. However, angiosperms appear suddenly and in great diversity in the fossil record in the Early Cretaceous (~130 mya). Claimed records of flowering plants prior to this are not widely accepted.
