Transcript Plants I
II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) 2. Colonization of Land: Environmental Diff’s Aquatic Habitats Terrestrial Water available Desiccating II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) 2. Colonization of Land: Environmental Diff’s Aquatic Habitats Terrestrial Water available Desiccating Sunlight absorbed Sunlight available II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) 2. Colonization of Land: Environmental Diff’s Aquatic Habitats Terrestrial Water available Desiccating Sunlight absorbed Sunlight available Nutrients at Depth Nutrients available II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) 2. Colonization of Land: Environmental Diff’s Aquatic Habitats Terrestrial Water available Desiccating Sunlight absorbed Sunlight available Nutrients at Depth Nutrients available Buoyant Less Supportive II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) 2. Colonization of Land: Environmental Diff’s Aquatic Habitats Terrestrial Water available Desiccating Sunlight absorbed Sunlight available Nutrients at Depth Nutrients available Buoyant Less Supportive Low oxygen, higher CO2 reverse II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) 2. Colonization of Land: Environmental Diff’s B. Adaptations to Life on Land 1. Waxy Cuticle (reduce water loss) II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) 2. Colonization of Land: Environmental Diff’s B. Adaptations to Life on Land 1. Waxy Cuticle (reduce water loss) 2. Gametes protected II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) 2. Colonization of Land: Environmental Diff’s B. Adaptations to Life on Land 1. Waxy Cuticle (reduce water loss) 2. Gametes protected 3. Embryo protected II. Introduction to Plants A. Evolutionary History 1. Green Algal “roots” – Ulva (sea lettuce) 2. Colonization of Land: Environmental Diff’s B. Adaptations to Life on Land 1. Waxy Cuticle (reduce water loss) 2. Gametes protected 3. Embryo protected 4. Spore wall thick VULNERABLE II. Introduction to Plants A. Evolutionary History B. Adaptations to Life on Land C. Plant Evolution – Acquisition of Terrestriality III. Plant Diversity A. Non-tracheophytes (no true vascular tissue) 1. Characteristics a. short (no vascular tissues) III. Plant Diversity A. Non-tracheophytes (no true vascular tissue) 1. Characteristics a. short (no vascular tissues) b. limited to moist habitats (swimming sperm) III. Plant Diversity A. Non-tracheophytes (no true vascular tissue) 2. Diversity a. Liverworts – most primitive plants - lie flat on ground - antheridia and archegonia on surface III. Plant Diversity A. Non-tracheophytes (no true vascular tissue) 2. Diversity a. Liverworts – most primitive plants b. Mosses III. Plant Diversity A. Non-tracheophytes (no true vascular tissue) 2. Diversity a. Liverworts – most primitive plants b. Mosses - have stomata – regulate water loss Archegonium Antheridium III. Plant Diversity A. Non-tracheophytes (no true vascular tissue) 2. Diversity a. Liverworts – most primitive plants b. Mosses - have stomata – regulate water loss - swimming sperm III. Plant Diversity A. Non-tracheophytes (no true vascular tissue) 2. Diversity a. Liverworts – most primitive plants b. Mosses - have stomata – regulate water loss - swimming sperm - cuticle – waxy covering on leaves