BIOL 371 Study Guide - Midterm Guide: Choanoflagellate, Archaeplastida, Multicellular Organism

• School: University of Calgary
• Department: Biology
• Course: BIOL 371
• Professor: Douglas Syme

Document Summary

Theme 1: evolutionary underpinnings of plant and animal. Including evolutionary origins of eukaryotic life, relationships of plants/animals to other forms of life, the rise of multicellularity and complexity. Theme 2: origins of plants and animals and introduction to diversity and classification. Recap: animals (and fungi and choanoflagellates) are opisthokonts. Are identified by a suite of characters: plants (and red/green algae) are archaeplastida. Dominant gametophyte generation: lycophytes (selagninella) and pterophytes (ferns) are vascular- seed less plants, with dominant sporophyte generation slowly adapting to lack of water, gymnosperms are vascular seed plants with naked seeds and evolved pollen as male gametophyte. Adapted to land conditions with less water: angiosperms evolved, flowers, seeds that are protected and efficient water and nutrient transport that allowed them to dominate the land. Desiccation, gas exchange, reproduction, support/locomotion, bulk flow, sensory, temperature extremes, light/uv, excretion: aquatic environments also impose challenges.