Phylum Chordata
50 important questions on Phylum Chordata
What four structures do chordates have sometime during their life?
What is the dorsal, hollow nerve chord?
When does the notochord disspear in complex vertebrates?
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What are Pharyngeal Slits?
What is the Postanal Tail?
What are the members of Subphylum Cephalochordata called?
What group has chevron-like muscles
What is the probable ancestor of vertebrates?
What is characteristic of those in Subphylum Vertebrate?
What are the characteristics of those in Vertebrate?
2) Have the neural crest during development
3)Their coelom is subdivided into a variety of cavities
4) For reproduction, most have seperate males and females
What are vertrae serially arranged in?
What do circulatory systems in vertebrates share?
2. Blood flows from the heart to arteries to capillaries to veins to heart again
3. Capillaries deliver O2-rich blood from the arteries to all the body's cells
What do vertebrate excretory system consist of?
What are cartilage and bone made of?
What does bone have that cartilage does nit?
What group used to dominate the world's oceans?
What are the members of Myxini called?
What do Myxini have in terms of body parts?
Petromyzontida's body structure
Chondrichthyes' Body Structure
What strengthens cartilage?
Which fins give Chondrichthyees lift
Which group is the first one to have teeth?
What is the lateral line system?
Why are fishes skin covered with scales and mucus
What is the swim bladder?
What is the gill cover?
What two structures allow bony fish to remain stationary in water?
What members are in Class Amphibia
Who were the first land vertebrates
What caused vertebrates to move to land?
What are the requirements for a move to land?
What kind of circulation do fish have?
Is the skin of a frog a good moisture barrier?
What makes reptiles adapted to land?
What is positive-pressure breathing?
What is negative-pressure breathing?
Also called thoracic breathing, this increases lung volume to create a negative pressure inside that sucks air into the lungs. This allows for large lung capacities
What is a benefit of internal fertilization?
Are reptiles ecto or endothermic?
In comparison to mammals, how many calories do reptiles need?
What are the functions of feathers?
What is a bird's skeleton called and what are its features?
Does a bird have a high or low metabolism?
What are birds lungs called?
What helps lighten a bird?
What kind of heart does a bird have?
What makes up the hair in a mammal?
What is the purpose of hair?
What is characteristic of mammals?
What are placental mammals?
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