Although plants are believed to have occupied the land much, much earlier than animals, both types of organisms had many of the same obstacles to overcome in order to exist on land. Which of the following was NOT one of the obstacles that had to be overcome by either plants or animals as they moved onto the land?

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    the need to keep their gametes and embryos wet during the reproductive process
    the "crushing" effects of gravity
    the existence of land organisms that consumed or "ate up" the organisms as soon as they began to move onto the land
    All of these were obstacles that had to be overcome.
asked May 19, 2013 in Biology by anonymous
    

1 Answer

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the existence of land organisms that consumed or "ate up" the organisms as soon as they began to move onto the land
answered May 20, 2013 by Bioshare ~Top Expert~ (34,070 points)

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