The Structure and Function of Adaptations 7.12 A investigate and explain how internal structures of organisms have adaptations that allow specific functions, such as gills in fish, hollow bones in birds, or xylem in plants Why adapt? • An adaptation is a body part (structure) or behavior, or other trait that helps an animal survive in a particular environment. • Adaptation can help an animal breathe, catch food, or hide. • All animals are adapted to live in certain habitats. Example of Adaptation The shape of an animal’s teeth depends on its diet. – Herbivores, such as deer, have many molars for chewing tough grass and plants. http://www.wpclipart.com/animals/aquatic/crocodile/Cuban_Crocodile.jpg – Carnivores, such as lions, have sharp canines to kill and tear meat. http://www.wpclipart.com/animals/D/deer/deer_2/sitka_black_tail.png http://www.wpclipart.com/animals/wild_cats/lion/lion_2/mountain_lion.png Who experiences adaptations? • All species of organisms (including all plants and animals) have adaptations and will continue to slowly adapt as the next generations are born. • Adaptations have different jobs (functions) in each organism, and we will discuss how the following adaptations and others help organisms survive. Birds Hollow Bones Fish Gills Plants Xylem • Hollow bones Birds – helps make flight possible • Leg Length – walking in deep water – landing on tree branches • Foot Webbing http://www.wpclipart.com/animals/birds/ I/Ibis/Ibis_small_photo.png – swimming • Beak Shape – reaching food (small bugs) – cracking shells (nuts) http://www.wpclipart.com/animals/birds/A /Avocet/American_avocet.png http://www.wpclipart.com/animals/birds/ R/robin/American_Robin.png Fish http://www.wpclipart.com/animals/aquatic/fish/2_fish/Cod.png • Gas exchange in gills • Fins for locomotion http://www.wpclipart.com/animals/aquatic/fish/other_fish/Rainbow_Trout.png • Ability to survive in salt or fresh water Plants • Photosynthesis • Roots, branches, leaves, fruit, and seeds adapt differently for different plants • Xylem – tissue that forms structures that carry water throughout the plant http://www.wpclipart.com/food/fruit/grapes/concord_grape_plant.png http://www.wpclipart.com/plants/flowers/_A_to_B/Bitter_Root.png http://www.wpclipart.com/plants/Pauls_Garden/trees/redbud_tr ee_with_young_leaves.jpg Resources • This PowerPoint is partially adapted from Ms. Weinberg. The original PowerPoint can be viewed at – http://www.quia.com/files/quia/users/amiew/AnimalAdaptations-PPT • It is also partially adapted from an animal adaptation powerpoint created by City of Corpus Christi Museum of Science and History the original can be viewed at – http://www.ccmuseumedres.com/Animal%20Adaptati ons.ppt • All images are either Microsoft Clipart or from the websites cited adjacent to each image.