Unit 6 Review 7.10A: Observe and describe how different environments, including microhabitats in schoolyards and biomes, support different varieties of organisms. 1 Define microhabitat. _smaller habitat within a larger one____ 2 Give an example of a microhabitat. __a tree within a forest, a bush in a schoolyard____ 3 Identify the biome described. (Taiga, Tropical Rainforest, Deciduous Forest, Grassland, Desert, Tundra, Salt Water, Fresh Water) _Desert_____ Spines or waxy leaves Fresh Water Ducks, lillypads, catfish Tropical Rainforest Wide leaves with drip tips Taiga________ Coniferous trees Deciduous Forest Colorful leaves in fall Grassland____ Savannah, praire Tropical Rainforest Near equator, warm and humid Salt Water Ocean, Gulf of Mexico _Desert_____ Plants store large amounts of water _Desert_____ Cactus and camels Tropical Rainforest Most Biodiversity Tropical Rainforest Vines, monkeys, jaguars, toucan Salt Water__ High Biodiversity Tundra_____ Permafrost Tundra_____ Least Biodiversity Salt Water Kelp, seaweed, sharks, octopus _Desert_____ Low Biodiversity Fresh Water Lakes and rivers Deciduous Forest All seasons 7.10B: Describe how biodiversity contributes to the sustainability of an ecosystem. 4 The presences of Different/variety species and genetic variety within a species contributes to biodiversity in an ecosystem. 5 When an ecosystem remains successful even after a stress such as a drought, it is sustainable. 6 As biodiversity increases, sustainability increases. As biodiversity decreases, sustainability decreases. 7 Which ecosystem could survive if there was a disease that killed the mice? __Y___ Explain. _More biodiverse, more choices to eat; so it is more sustainable_ X Y 7.10C: Observe, record, and describe the role of ecological succession such as in a microhabitat of a garden with weeds. 8 Primary Succession, Secondary Succession, or Climax Community: Secondary Starts with soil Climax Forest Primary Volcanic eruption Climax Least change over time Primary Starts with rock Climax Stable, equilibrium Secondary Fire, flood Primary Pioneer Species: Lichen Secondary Pioneer: grass 9 Give the order of what kinds of plants will grow after a farm is left abandoned. (flowers, shrubs, grass, trees) Grass flowers shrubs trees 10 Define pioneer species. First species to arrive in an area after a disturbance 11 Ecological succession is (good) for an ecosystem because it increases biodiversity. 12 Illustrate and describe primary succession. Primary succession begins Pioneer species lichen, Once there is soil, larger After 1,000 years this after a volcanic eruption. wind, and water break plants like grass can area could turn into a The lava hardens and down the rock into soil. begin to grow. climax community full of turns into rock. trees and large animals. 13 Illustrate and describe secondary succession. Secondary succession The soil contain seeds Grasses are replaced After 100 years this area begins after a fire or and quickly begins to with more complex could turn into a climax flood, when an area is grow pioneer species organisms like bushes community full of trees left with only soil. such as grass. and rabbits. and large animals. 14 Illustrate and describe succession of a flower garden. A beautiful flower Wind and animals bring Weeds begin to take Invasive species, weeds, garden, where flowers in seeds of weeds. over. are now the dominant are the native species. species. .