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Adaptations and interactions between organisms

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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.
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