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Oct 31, 2023 · Seedless vascular plants are plants that contain vascular tissue, but do not produce flowers or seeds. In seedless vascular plants, such as ferns and horsetails, the plants reproduce using haploid, unicellular spores instead of seeds.
- 25.4: Seedless Vascular Plants
Discuss the importance of adaptations to life on land....
- 25.4: Seedless Vascular Plants
Describe the distinguishing traits of the three types of bryophytes. Identify the new traits that first appear in seedless vascular plants. Describe the major classes of seedless vascular plants. Compare and contrast roots, rhizoids, and mycorrhizae.
Sep 23, 2015 · The difference between seed plants and seedless plants is that seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication. The plant kingdom is traditionally divided into four main divisions, i.e Thallophyta, Bryophyta, Pteridophyta and Spermatophyta.
Discuss the importance of adaptations to life on land. Describe the classes of seedless tracheophytes. Describe the lifecycle of a fern. Explain the role of seedless vascular plants in the ecosystem. The vascular plants, or tracheophytes, are the dominant and most conspicuous group of land plants.
- Vascular Tissue: Xylem and Phloem. The first fossils that show the presence of vascular tissue date to the Silurian period, about 430 million years ago.
- Roots: Support for the Plant. Roots are not well preserved in the fossil record. Nevertheless, it seems that roots appeared later in evolution than vascular tissue.
- Leaves, Sporophylls, and Strobili. A third innovation marks the seedless vascular plants. Accompanying the prominence of the sporophyte and the development of vascular tissue, the appearance of true leaves improved their photosynthetic efficiency.
- Ferns and Other Seedless Vascular Plants. By the late Devonian period, plants had evolved vascular tissue, well-defined leaves, and root systems. With these advantages, plants increased in height and size.
Lycophytes and pterophytes are seedless vascular plants. All vascular plants produce seeds. All nonvascular embryophytes are bryophytes. Seed plants include angiosperms and gymnosperms.
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Identify the new traits that first appear in seedless vascular plants. Discuss how each trait is important for adaptation to life on land. Identify the classes of seedless tracheophytes. Describe the life cycle of a fern. Understand the importance of seedless plants to humans.
