Chapter 26 - Introduction

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To fully appreciate this tutorial, you should be familiar with the following concepts:
• Taxonomy of seedless plants
• Basic plant structure
• Meiosis
• Fertilization

When you are finished with the tutorial, you will be able to:
• Describe how haploid (1n) gametophytes produce gametes via mitosis.
• Describe how diploid (2n) sporophytes produce spores via meiosis.
• Describe how the sporophyte generation is formed from the fertilization process.
• Describe how the gametophyte generation is formed from the process of meiosis.
• Identify bryophyte gametophyte and sporophyte structures.
• Identify pterophyte gametophyte and sporophyte structures.

How do seedless plants exhibit alternation of generations?

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Summary

All land plants share a similar life cycle referred to as alternation of generations. While this basic life cycle occurs in all plants, there are differences in structures seen in the various phyla. The diversity of plants means there is diversity in how this life cycle is exhibited. Different yet the same — understanding differences within similarities is essential to understanding the relationships of living organisms.

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