Plants

Plant Adaptations

ADAPTING TO LAND Plants moved from water to land -adaptations to survive this new and strange environment. -adaptations to survive this new and strange environment. Challenges to move to land:  Water is scarce  Climate (temp) changes rapidly

ADAPTING TO LAND The move from water to land offered plants distinct advantages  more exposure to sunlight for photosynthesis  Increased Carbon Dioxide Levels  Greater Supply of Inorganic Nutrients

Plant Plants Challenges Adaptations Plant Plants Challenges Adaptations  Do not live close to water  Plants evolved VASCULAR TISSUE, (xylem and phloem) specialized to conduct water and nutrients throughout the plant  Roots, stems, and leaves have vascular tissue.

Plant Plants Challenges Adaptations Plant Plants Challenges Adaptations  Plants on land are susceptible to Drying out through Evaporation  CUTICLE enabled plants to conserve water by slowing evaporation from the plants body.  THE CUTICLE IS A WAXY, WATERPROOF LAYER THAT COATS THE PARTS OF A PLANT EXPOSED TO AIR.

cuticle Which picture shows the cuticle of a cactus? 1 2

Plant Plants Challenges Adaptations Plant Plants Challenges Adaptations  Water needed for reproduction, because sperm had to swim through water to fertilize an egg.  Water needed for reproduction, because sperm had to swim through water to fertilize an egg.  Plants developed SEEDS. A SEED is an Embryo surrounded by food supply and protective covering.  Seed coat are textured so that they stick to fur and feather of animals or contained in fleshy fruits that are eaten and dispersed by animals.  Seeds can survive long periods of bitter cold, extreme heat, or drought.

Plant Plants Challenges Adaptations Plant Plants Challenges Adaptations  Climate Lots of sun, no rain (desert) No sun, lots of rain (rainforest)  Insect Attack  Nutrients not available where they live Small leaves, thick cuticle, extensive roots Large leaves, thin cuticle Plants manufacture chemicals that have powerful affects on animals Ex. Tabacco Carnivorous plants have specialized leaves that can trap and digest insects.