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Unformatted text preview: 1 Plants: An Introduction Plants: An Introduction The The Plant Kingdom Plant Kingdom can be viewed as having can be viewed as having the true terrestrial plants and those that are the true terrestrial plants and those that are “almost almost ” true terrestrial plants. true terrestrial plants. Outline Outline c Key concepts c Important roles of Plants provide food, air (oxygen), clothing, etc. c Classification Bryophytes, Seedless Vascular Plants, Gymnosperms, and Angiosperms c Evolutions c Conclusions Key Concepts: Key Concepts: c The plant kingdom consists of multicelled photoautotrophs c Nearly all plants live on land c Plants have structural adaptations that allow them to photosynthesize, absorb water and ions, and conserve water c Land plants are reproductively adapted to withstand dry periods 2 Key Concepts: Key Concepts: c Early divergences gave rise to the bryophytes, then the seedless vascular plants, and then the seed-bearing vascular plants c Gymnosperms are the seed-bearing vascular plants and the angiosperms are also vascular plants that bear flowers and seeds c Angiosperms include two main classes – Eudicots (Dicots) and Monocots The Plant Kingdom The Plant Kingdom Evolution of land plants: What general types of adaptations are needed to allow plants to successfully invade terrestrial environments? Adaptations required to move from aquatic to terrestrial environments: a. Roots/root like structures b. Vascular transport of water, minerals, and nutrients....
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- Spring '10
- Seedless Vascular Plants, Gametangia Gametophyte Sporophyte Vascular tissue Gymnosperm Angiosperm Antheridium Archegonium Sporangium