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The Animal Cell. The Chloroplast. Chromoplast in Forsythia. Cell Walls. Water transport thru cells. Cellular Development: Mitosis. Early Cellular Development: The seed. The Generic Seedling. Moist, high temps Consistent year round growth High diversity Some adaptations:
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Moist, high temps Consistent year round growth High diversity Some adaptations: Most plants evergreen Drip tips Epiphytes Waxy leaves Tropical Rain Forest
Nutrient poor and seasonally flooded soils Still warm temps, but lower humidity Both deciduous and evergreen Fire adapted Southeastern mixed forest
Too cold/dry in winter to support much photosynthesis Snow melt allows for rapid growth in spring Very similar to species found in Asia Temperate Deciduous Forest
Limited by temperature Acidic soils Mostly evergreen trees Taiga
Temperature extremes, too dry and too much fire to support forest Few trees, mostly grasses and forbs C3 and C4 grasses: dominance determined by temp and water Very little original prairie left Grasslands
Hot, dry Mostly cacti, shrubs, grasses Slow growing vegetation Adaptations: Water stress CAM photosynthesis Protection against herbivory Hot Desert
Communities: Groups of interacting organisms in a given place
Positive interactions: Pollinators Seed dispersers Nitrogen fixing bacteria and fungi Animals that prey upon herbivores Negative Interactions Herbivores Fungi Pathogens Which organisms do plants interact with?
Lab: How are plants adapted to their particular environments? • What adaptive trait do you see? • How is this an adaptation to this plant’s environment?