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Biology Chapter 2.1

This chapter delves into the intricate relationships between organisms and their environments, exploring key concepts in ecology. It defines biotic and abiotic factors, outlines levels of organization from individuals to ecosystems, and discusses habitats and niches. The chapter emphasizes survival relationships, including predator-prey dynamics and various types of symbiotic relationships such as commensalism, mutualism, and parasitism. Understanding these interactions is crucial for studying biodiversity and the impact of both natural causes and human activities on ecosystems.

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Biology Chapter 2.1

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  1. Biology Chapter 2.1 Organisms and Their Environment

  2. 2.1 Organisms and Their Environment • Ecology- study of organisms and their environment • Biosphere – high in atmosphere to bottom of ocean Provided by the SeaWiFS Project, NASA/Goddard Space Flight Center and ORBIMAGE.

  3. Biotic Factors = Living Abiotic Factors = Nonliving 2.1 Organisms and Their Environment www.mass.gov/.../images/multiLayerForest.jpg www.stock-photography.co.za/stock%20photograp... www.tworiversmarina.com/Mississippi%20River%2... earthguide.ucsd.edu/.../acct/lzace/jellyfish.gif

  4. 2.1 Organisms and Their Environment • Levels of Organization • Individual • Population • Biological community • Ecosystem www.knowledgebank.irri.org/.../image3.gif

  5. 2.1 Organisms and Their Environment • Habitat – where an organism lives • Can be changed by natural causes or humans www.ohvec.org/.../mountaintop_removal/007/57.jpg upload.wikimedia.org/wikipedia/commons/thumb/...

  6. 2.1 Organisms and Their Environment • Niche- a position a species has in its environment • No two sp. Can exist in the same niche in the same place at the same time • One will gain control over resources • The other must adapt, move elsewhere, or go extinct. y2u.co.uk/.../I_zq5/RN_Animal_Giraffe_1.jpg

  7. 2.1 Organisms and Their Environment www.unu.edu

  8. 2.1 Organisms and Their Environment • Survival Relationships • Predator / Prey Relationship www.tiem.utk.edu/.../pred-prey.gph1.gif

  9. 2.1 Organisms and Their Environment • Survival Relationships • Symbiotic Relationships • Commensalism • Remora/Shark • Barnacles on whales • Mutualism • Bacteria in lg intestines • The Nile crocodile and the Egyptian plover • N-Fixing Bacteria and plants • Parasitism • Tapeworms • Fleas, Lice • Mistletoe www.dkimages.com/.../previews/887/45066290.JPG www.warrenphotographic.co.uk/.../cats/00955.jpg www.abc.net.au/.../img/f_barnacles.jpg www.scubaduba.com/gallery/shark2.jpg

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