Plant Evolution and Bryophytes Kingdom Plantae Plant Evolution and Bryophytes

K.Plantae Characteristics EUKARYOTIC MULTICELLULAR AUTOTROPHIC – use photosynthesis SESSILE (Stationary) CELL WALLS OF CELLULOSE

Ecological Role of Plants The base of most food webs - collect the sun’s energy Produce Oxygen Provide shelter

What do plants need to survive? Sunlight Minerals Carbon dioxide Oxygen Water

How did the evolution of plants occur? Directions: Using the marker board at your table, create a timeline placing the following list of events in order from oldest to most recent. Be able to defend your timeline. Marker boards, butcher paper, scratch paper…etc

List of events Water conducting (vascular) tissue Gymnosperms (cone bearing plants with seeds) Green Algae (plant like protist) Ferns (with vascular tissue) Naked seeds (not in fruit) Angiosperms (flowering plants) Mosses (lack vascular tissue) Flowers, seeds in fruit

Ferns and their relatives Flowering plants Cone-bearing plants Ferns and their relatives Mosses and their relatives Green algae ancestor Flowers; Seeds Enclosed in Fruit Seeds Water-Conducting (Vascular) Tissue Copy correct timeline into journal

Green Algae Non vascular Plants Ancestor of all land plants Mosses Explain the evolutionary hurdle of going from water to land

Nonvascular Plants Do not have vascular tissue (No stems or leaves) and cannot grow tall. Require a constantly moist environment Water is required for reproduction Nutrients move by diffusion Reproduce by spores Known as Bryophytes

Bryophytes (1st land plants) Ex. Mosses Anchor to land by rhizoids Thin cells that absorb water and minerals and anchor them to the land Rhizoids