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Questions and Answers
What evolutionary change primarily facilitated tetrapods' transition to land?
What evolutionary change primarily facilitated tetrapods' transition to land?
- Increased reliance on aquatic prey.
- Transformation of fins into limbs capable of supporting weight. (correct)
- Development of scales for preventing water loss.
- Evolution of gills for extracting oxygen from the air.
Which adaptation is most directly related to the ability of tetrapods to perceive sound in a terrestrial environment?
Which adaptation is most directly related to the ability of tetrapods to perceive sound in a terrestrial environment?
- Development of a lateral line system.
- Ears capable of detecting airborne vibrations. (correct)
- Presence of lungs for breathing air.
- Streamlined body shape for movement.
How did the evolutionary history of tetrapods involve a combination of aquatic and terrestrial adaptations?
How did the evolutionary history of tetrapods involve a combination of aquatic and terrestrial adaptations?
- Tetrapod ancestors initially evolved limb-like fins while still primarily adapted for aquatic life. (correct)
- Early tetrapods completely abandoned aquatic adaptations upon developing limbs.
- Aquatic adaptations were only regained in secondarily aquatic tetrapods.
- Terrestrial adaptations emerged independently of any aquatic ancestry.
A researcher discovers a fossil of an ancient animal possessing both limb-like fins and a functional lateral line. What conclusion can be drawn?
A researcher discovers a fossil of an ancient animal possessing both limb-like fins and a functional lateral line. What conclusion can be drawn?
Which of the following scenarios would present the greatest challenge to early tetrapods colonizing land?
Which of the following scenarios would present the greatest challenge to early tetrapods colonizing land?
Flashcards
Tetrapod
Tetrapod
Vertebrate animals having four limbs. Includes amphibians, reptiles, birds, and mammals.
Tetrapod Ear Adaptation
Tetrapod Ear Adaptation
Tetrapods evolved ears to perceive sound waves traveling through the air, an adaptation critical for terrestrial life.
Lobe-Fins to Limbs
Lobe-Fins to Limbs
The fins of lobe-finned fishes gradually evolved into limbs with digits, facilitating the transition to terrestrial locomotion.
Study Notes
- Tetrapods have specific adaptations that include four limbs and feet with digits.
- They also possess ears capable of detecting airborne sounds.
- In one line of lobe-fins, their fins evolved to become progressively limb-like.
- The rest of the body retained adaptations suited for aquatic life.
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