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From Organisms to Biomes

Unit Assessment 6 . From Organisms to Biomes. From Organisms to Biomes. The simplest level in any environment is an individual organism . A beaver. Species. The next level is the species. A species consists of organisms that have common features and can mate with one another.

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From Organisms to Biomes

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  1. Unit Assessment 6 From Organisms to Biomes

  2. From Organisms to Biomes • The simplest level in any environment is an individual organism. A beaver

  3. Species • The next level is the species. • A species consists of organisms that have common features and can mate with one another. Two different species of large cats

  4. Population • The next level is a population • A population consists of all the members of the same species that live in the same place. A population of deer

  5. Community • The next level contains only living things. • A community includes different populations that live in the same place. A community of animals

  6. Ecosystem • The next level includes living and nonliving things. • An ecosystem consists of all the organisms within a community and the nonliving things with which they interact. An aquatic ecosystem

  7. Biome • The next level is a biome. • A biome is a region that contains groups of similar ecosystems and climates. A Tropical Rainforest

  8. Biomes • Desert • Taiga • Tundra • Grassland • Marine • Tropical rainforest • Temperate rainforest • Temperate deciduous forest • Coniferous forest • Freshwater

  9. Biosphere • All of these make up the Biosphere. • The part of Earth that supports life. (This includes the top portion of Earth’s crust, all the waters that cover Earth’s surface and the atmosphere that surround Earth) The living Earth

  10. Levels of Organization Biome

  11. Living and Nonliving Factors • Any living factor in an environment is called a biotic factor. • Which include plants, animals, protists and fungi. Living factors (biotic)

  12. Living and Nonliving Factors • Any nonliving factor in an environment is called an abiotic factor. • These include temperature, oxygen concentration, humidity, and the amount of sunlight (Temperature) (Sunlight) Nonliving factors (abiotic)

  13. Living and Nonliving Factors • Abiotic and biotic factors vary from ecosystem to ecosystem. • And may also vary from time to time in the same ecosystem. Such as the amount of rainfall and number of plants

  14. A Habitat • The place in which an organism lives. (A habitat provides food, shelter, best temperature and amount of moisture an organism needs to survive.) Human habitat Mouse habitat

  15. Symbiotic Relationships • Not all relationships among organisms involve food. Many organisms live together and share resources in other ways. • Any close relationship between species is called symbiosis. Wildebeest and cow birds

  16. Symbiotic Relationships • A symbiotic relationship in which both species benefit is called mutualism. A bee and a flower A large eel and a small fish

  17. Symbiotic Relationships • A symbiotic relationship in which one organism benefits and the other is not affected is called commensalism. Clown fish and sea anemones

  18. Symbiotic Relationships • A symbiotic relationship in which one organism benefits but the other is harmed is called parasitism. A mosquito Dog ticks

  19. Niches • One habitat might contain hundreds or even thousands of species. • Competition for resources should make it impossible to survive. • But each species has different requirements for its survival.

  20. Niches • As a result, each species has its own niche. • A niche refers to how an organism survives, how it obtains food and shelter, how it finds a mate and cares for its young, and how it avoids danger.

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