Internet Assignment biology 101 - Nicole Marshall Internet...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Nicole Marshall Internet Assignment Bio 101 Adaptations of Birds for Flight. 1. What class are birds in? Birds belong to the Class Aves. 2. What characteristics are common to this class? (there are quite a few  here) All birds belonging to the Class Aves have several major features in common  with each-other including that all have feathers, wings which arise from  modified forelimbs, no teeth, scaly feet, a four-chambered heart, ability to lay  eggs, shoulder blades that are joined like a wishbone and are warm blooded. 3. What famous fossil shows intermediate characters between birds and  reptiles? The evolutionary jump from reptilian to birds is best demonstrated in the ancient fossilized remains of Archaeopteryx. This specimen is unique because it had feathers, teeth, and reptilian like claws. 4. What fossil birds have been found at Rancho La Brea? (there is a link to  their site.) What is the approximate age of these fossils? At the Rancho La Brea tar pit site scientists have uncovered more than twenty  different species of fossilized birds and over 100,000 total specimens.  The  fossil record includes a variety of members: the Golden Eagle, Bald Eagle,  Woodward Eagle, Grinnell’s Crested Eagle, California Condors, Vultures, and  Merriam’s Teratoms.  Fossil deposits at this site first started to form 40,000  years ago. Below list the ways in which birds have adapted their anatomy and physiology  to flight. Bones: The bones of bird are far less numerous as compared with other animals.  Bird’s  bones designed to be lightweight are hallow yet strong allowing them to fly.  Internally they are reinforced with struts for added support. Internal organs: Internally birds are like well oiled machines in order to reach great flight speed  birds have very efficient organ systems.  Their lungs are bathed in a constant  stream of fresh air due to the adaptation of air sacs.  The bird’s nine air sacs also  act to balance them, as shock absorbers and as means of cooling them off. 
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Birds have a heart that is very similar to the human heart, being four chambered  and large for their size.  Birds have a structure known as a crop with enables  them to gain large amounts of food and store it.  Bird’s digestive system is also  made up of two stomachs in order to help them quickly break up and absorb their  food supply.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern