Vertebrate Ribs Present (y/n) All trunk vertebrae have ribs (y/n) Some ribs attach to sternum (y/n)...

Vertebrate	Ribs Present (y/n)	All trunk vertebrae have ribs (y/n)	Some ribs attach to sternum (y/n)
Frog
Salamander
Snake
Lizard
Mammal

Expert Solution

Vertebrate	Ribs Present	All trunk vertebrae have ribs	Some Ribs attached to sternum
Frog	No	No	No
Salamander	Yes	Yes	No
Snake	Yes	Yes	No
Lizard	Yes	Yes	No
Mammal	Yes	No	Yes

Frog: Ribs are absent in frogs. Modern amphibians have very small ribs but they are fused to the vertebrae. Since frogs do not have ribs answer for all the 3 questions is no.

Salamander: Salamander has ribs on all the trunk vertebrae but it does not have a sternum and hence no sternal ribs. Some species of salamander have poking poisonous ribs for self defence.

Snake: Snakes also have ribs on the trunck vertebrae but they do not have a sternum hence no sternal ribs.

Lizards: Lizards also just like the above mentioned reptiles have ribs on trunk vertebrae but no sternal ribs. Legless lizards do not even have a sternum.

Mammals: Mammals have approximately 9-24 ribs. Ribs are present only on the thoracic vertebrae and not on all the trunk vertebrae

gladiator answered 1 year ago

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Vertebrate Ribs Present (y/n) All trunk vertebrae have ribs (y/n) Some ribs attach to sternum (y/n)...

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