5. Fish use to breathe underwater. (However, many species of lobe-finned fishes that evolved during the Devonian period also had .) 6. In fossils, what anatomical evidence indicates that gills were present? 7. Many transitional species had gills which means that they lived in . 8. Lungs allow an animal to breathe . Why did this adaptation evolve? 9. Tetrapods use to breathe. Do any modern tetrapods have gills? Explain.
The Ribcage 10. Why is a sturdy ribcage important for tetrapods?
Humerus (Limbs) 11. What is homology? To what are fins homologous?
12. Why are lobe-finned fish thought to be the closest relatives to tetrapods?
Digits 13. Most modern tetrapods have digits on front limbs and digits on back limbs, although some species have fewer. How does this number compare to the number of digits on the limbs of transitional fossil forms?
Head and Neck 14. Why do many of the transitional fossils between fish and tetrapods have flat heads?
15. How did the anatomy of the shoulder and head change during tetrapod evolution?
COMPARING FOSSIL FORMS 16. and are fossil species have characteristics unique to fish as well as characteristics found in fish and tetrapods. Describe the characteristics of lobe-finned fish that are similar to those of tetrapods.
17. Which lobe-finned fish is alive today?
18. Acanthostega and Icythyostega have been called fish-like tetrapods. Explain why they are described as such and describe the environment in which they probably lived.
19. Why is Tiktaalik such an important transitional fossil?
20. and are early tetrapods that do not have features unique to fish. Describe how these two species differ anatomically and what that means about where they each lived.
Answers: 1
Biology, 22.06.2019 02:40, pattydixon6
Svetlana and her mother are very similar. both have blonde hair, a love of scrapbooking, blue eyes, and a thin nose. which statement most likely describes svetlana’s traits? svetlana inherited her love of scrapbooking from her mother, but her blue eyes come from her environment. svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment. svetlana inherited her thin nose from her mother, but her blonde hair comes from her environment. svetlana inherited her blonde hair from her mother, but her thin nose comes from her environment.
Answers: 1
Biology, 22.06.2019 07:50, darceline1574
Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d
Answers: 2
Biology, 22.06.2019 09:10, dmarte11092001
Explain the cellular functions that occur when antibiotics attack a bacteria cell. a. antibiotics target the cell wall, cell membrane, and the processes of protein and nucleic acids production in bacteria to rupture the cell. b. antibiotics create dormant resistant endospores to preserve the genetic material and rupture the cell. c. antibiotics target the cell wall and form a bridge-like connection to form conjugation. d. antibiotics use binary fission to grow twice its size, replications its dna, and split into two cells.
Answers: 2
5. Fish use to breathe underwater. (However, many species of lobe-finned fishes that evolved during...
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