Chapter 30 study guide- plant diversity II

Chapter 30 study guide- plant diversity II - BIO 204 Review...

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BIO 204 Review Sheet for Exam III CHAPTER 30 – Plant Diversity II Seed plant characteristics that have led to their success: o In Bryophytes the Gametophyte is large. o In Ferns the Gametophyte is small, but still visable. o In seed plants the Gametophyte is microscopic, to help avoid stress on the plant. o Why hasn’t the gametophyte stage been removed- It hasn’t been completely removed because the gametophyte nourishes the sporophyte embryo. o Make sure you know the differences between the major land plants regarding the gametophyte (i.e., which is dominant and which is retained). Be able to compare homosporous and heterosporous plants o Seed plants are which type? What role do Megasporangia and Microsporangia play? o Megasporangia- Produce Megaspores, which give rise to female gametophytes. o Microsporangia- Produce Microspores, which give rise to male gametophytes. o Megaspores are retained. Sporocyte- The mother cell. What makes pollen different from the Bryophyte and Pteridophyte reproductive strategy o Pollen lack flagella (except for gymnos), carried by wind or animals. o Bryophytes and Pteridophytes have flagella, must swim to reach egg in archegonia. Pollination- When the pollen reaches the ovule. Fertilization- When the sperm meets the egg. What is an ovule?
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Chapter 30 study guide- plant diversity II - BIO 204 Review...

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