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What are the general trends in evolution of terrestrial plants? If you compare alternation of generation cycles of algae and ferns, what is the most significant difference between the two? Be descriptive as possible.

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Nelly Stracke
Nelly StrackeLv2
29 Sep 2019

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1) What is the event that marks the transition from haploid to the diploid stage of the life cycle and what event marks the transition back to the haploid stage again. Describe the timing of these two cellular even in life cycles that are dominated by haploid cells, dominated by diploid cells or that have alternation of generations.

2) What are the closest relatives of land plants? How do you know this? What do these relatives tell us about the ancestors of green plants -- where did they live? How big were they?

3) Why was it the green algae that gave rise to land plants -- why don’t we have relatives of red or brown algae living on land?

Part A:

Briefly, explain the current hypotheses about how brown algae, red algae, chlorophytes and charophytes (couple of groups of green algae), and land plants are related. What are the characteristics of the land plants that distinguish it from the most closely related algal group, and (if applicable) how do each of these characteristics benefit plants in a terrestrial environment?

Part B:

What are the differences between plant cells, animal cells, and bacterial cells. And what are the characteristics of different plant cell types.

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