Asked by Quessia Mukanda on Jul 27, 2024
Verified
Which of these characteristics is associated with flight requirements in birds?
A) light, hollow bones
B) a light, horny beak with no teeth
C) respiratory air sacs and lungs with one-way air flow
D) an enlarged breastbone with strong muscles attached
E) All of the answers list requirements for flight in birds.
One-way Air Flow
A respiratory adaptation in some animals, such as birds, allowing air to pass through lungs in a single direction for more efficient gas exchange.
Horny Beak
A hard, keratinous structure found in birds and certain reptiles, used for feeding, grooming, and other behaviors.
Respiratory Air Sacs
Membrane-enclosed spaces in birds that are part of the respiratory system, aiding in oxygen exchange and making flight more efficient.
- Explain the evolutionary changes necessary for bird flight and their implications on evolution.
Verified Answer
Learning Objectives
- Explain the evolutionary changes necessary for bird flight and their implications on evolution.
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