Lesson plan

Enation

An enation is a scaly leaflike structure, differing from a leaf in its lack of vascular tissue. Enations are created by some leaf diseases and occur normally on Psilotum. They are also found on some early plants such as Rhynia of the Devonian period, where they are hypothesized to have aided in photosynthesis.

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Article summary

An enation is a scaly leaflike structure, differing from a leaf in its lack of vascular tissue. Enations are created by some leaf diseases and occur normally on Psilotum. They are also found on some early plants such as Rhynia of the Devonian period, where they are hypothesized to have aided in photosynthesis.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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