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Author Question: Briefly state some of the problems that plants had to overcome as they adapted to land and how they ... (Read 22 times)

go.lag

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on: Jul 15, 2018

Briefly state some of the problems that plants had to overcome as they adapted to land and how they
  did that. What will be an ideal response?



Question 2

Briefly state why the development of the amniote egg was so significant in the evolution of the
  reptiles. What will be an ideal response?



Mholman93

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Reply #1 on: Jul 15, 2018
Answer to Question 1

Plants had to solve some of the same problems that animals did by dealing with the effects of
desiccation, gravity, and reproduction. Vascular plants have a tissue system for the movement of water
and nutrients, and for support. The development of seeds allowed plants to reproduce without
problems of drying out.



Answer to Question 2

Amphibians were limited in colonizing land because they had to return to water to lay their gelatinous
eggs. Reptiles developed amniote eggs in which the developing embryo is surrounded by a liquidfilled
sac and provided with food and a waste sac. This egg allowed reptiles to colonize all parts of the
land.



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