BIOL 1202 : Biology 1202 Final Study Guide
Document Summary
Concept 29. 1: land plants evolved from green algae. Charophyceans have been identified as the closest relatives of land plants. Comparisons of nuclear and chloroplast genes point to close relationship between charophytes and land plants: genetic evidence, the move to land. Durable polymer sporopollenin found in charophyceans & land plants. Nutrient-rich soil, because the nutrients were not washed. Few herbivores & pathogens away: four key traits in nearly all land plants, relationships among plant groups, trends in plant evolution. In all three bryophyte phyla gametophytes are the dominant stage of the life cycle. Produce flagellated sperm in antheridiaand ova in archegonia. Form ground hugging carpets & at most are only a few cells thick: bryophyte sporophytes. Consist of a foot, a seta, and a sporangium. Alternative generation that the plant does not spend much time in, and it is not very big. Sporophytes of seedless vascular plants are the largergeneration.
