EVSC 2200 Lecture Notes - Lecture 2: Herbaceous Plant, Woody Plant, Dicotyledon

• School: University of Virginia
• Department: Environmental Sciences
• Course: EVSC 2200
• Professor: Smith Tom

Document Summary

Nonvascular plants (lack a specialized conducting (vascular) system) Seedless plants (ex - ferns - not going to focus on in this course) Plants with seeds enclosed within a fruit. The most abundant and diverse group of plants, with more than 250,000 known species. Gymnosperms: plants that lack flowers but produce seeds. Both gymnosperms and angiosperms have vascular tissue and both produce seeds. However, the seeds of angiosperms are surrounded by the wall of the ovary of the flower which form the fruit, whereas gymnosperms don"t possess this structure. Germination: the development of a seed from its embryonic form to the birth of a new plant. Cotyledon: lobe contained within the seed (rudimentary leaf of the embryo of a seed) First leaves: first organs of photosynthesis to appear. Radicle:part of the plant from which the. Biennial - requires all or part of 2 years. Perennial - live more than 2 years.