Plants need to photosynthesize; leaves shaped to maximize sunlight intake
Plants require oxygen, CO2 for cellular respiration, photosynthesis; must also expel excess oxygen
Water and Minerals
Plants may lose water through transpiration, is consumed in photosytnehsis; thus, land plants evolved structures to limit water loss and speed water uptake; absorb minerals with water
Nutrients in soil needed for plant growth
Land Plant Ancestor
Similar to green algae; mostly unicellular
Why Are Green Algae Plants?
Cell wall and photosynthetic pigments similar to plants; genomes show them to be closely related
How did water lack shape terrestrial plant evolution?
Plants were pressured to become more resistant to drying rays of sun, more capable of conserving water, and more capable of reproducing without water