Respuesta :
Horsetail is extremely adaptable to various light levels, growing in every condition, from full sun to partial shade. That why they prefers filtered shade, such as that found on the forest floor beneath tall trees. The ancestors of horsetail species are not herbaceous.
What are the ancestor of horsetail species?
The ancestors of horsetails, the Sphenophyta, which included both herbaceous and arborescent forms, were successful and dominant components of fern vegetation during the Paleozoic, but they became less diverse and increasingly limited to their herbaceous forms during the Mesozoic by specializing in colonizing disturbed and moist habitats.
Although fossil data indicate that the morphology of horsetails has remained remarkably stable since the Jurassic and possibly even the Triassic, essential changes in plant physiology that allowed survival during this turbulent period are not necessarily captured in the fossil record.
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