PCC Biology Mr. Reid Final Exam with Correct Answers Questions and Correct Answers

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PCC Biology Mr. Reid Final Exam with
Correct Answers Questions and Correct
Answers
Characteristics of class aves Ans: -Endothermic
-Have feathers
-Hollow bones
-Cloaca
-Designed for flight
What is the name for a scientist who studies birds? Ans:
Ornithologist
What are the types of feathers birds have? Ans: 1. Down
2. Vanned
What is another name for a vanned feather? Ans: contour
Parts of a bird's feathers Ans: 1. Vane
2. Rachis
3. Bards
4. Barbules
5. After-feather
6. Calamus
What is another name for calamus? Ans: Quill
What are barbs? Ans: parallel strands that branch off of the main
part of the feather
What are barbules? Ans: tiny extensions from barbs that are held
together by barbicels (interlocking parts)
What is the alula? Ans: A bird's "thumb"

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Characteristics of bones (class aves) Ans: · Strong yet lightweight
skeleton
· Large sternum with keel
· Fused clavicle
· Pneumatized bones
· Keratin bill
Characteristics of keratin bills (class aves) Ans: -All extant birds
toothless
-Some extinct birds had socketed teeth
Characteristics of pneumatized bones (class aves) Ans: -Air-filled
bones
-Reinforced with trabeculae
What is another name for a fused clavicle? Ans: furcula (wishbone)
Characteristics of muscles (class aves) Ans: -No flight muscles on
back
-Pectoralis major (pulls wing down)
-Supracoracoideus (pulls arms back, not located on back of bird)
-Special rope and pulley design
What is the supracoracoideus? Ans: -Special rope and pulley
design
-Pulls arms back
-Not located on the bird's back
Characteristics of respiration (class aves) Ans: · Lungs and air sacs
· Two cycles to move air through
· Syrinx - how birds make sounds
· Two cycles to move air


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