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Origin and Evolution of Land Plants
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7
Biology
Undergraduate 1
09/22/2009

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Cards

Term
What is most likely the ancestor of land plants?
Definition
the green alga (chlorphyta)
Term

Name 3 characteristics that green algae have in common with land plants.

Definition

  • same photosynthetic pigments
  • cellulose cell walls starch used as a food storage compound
  • similar chloroplast structure
  • production of cell plate during mitosis

Term
What group of green algae is the most closely related to plants?
Definition
the charophyta
Term
species of charaphyte that clings to rocks and lives in shallow water near a shore
Definition
coleochaete
Term
also known as stonewort; a freshwater alga; has a central axis like a stem with branches.
Definition
Term

What were the advantages of evolving to live on land for plants?

Definition
  • more light that was unfiltered by water
  • more carbon dioxide in the atmosphere
  • no initial competition or predators
Term

What were the challenges of evolving to live on land for plants?

Definition
  • avoiding desiccation
  • taking up water
  • keeping upright
  • adjusting to taking carbon dioxide from the atmosphere
  • reproduction
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