questions about vertebrates.?

Question

1. animals of the class reptilia normally have what kind of skeleton?

2. is it possible for a vertebrate to have teeth, but no jaws? give an example.

3. name the class of vertebrate which has these characteristics: no feathers, no scales, no hair, has legs, bony skeleton, no teeth, has jaws.

4. give 5 vertebrates you see everyday. write the name and class they are found.

Answer 1

1. Reptilia have internal skeletons.

2. There are jawless fish like lamprey which I believe are vertebrates.

3. Amphibians fall into this category for the most part.

4. You can do this one on your own :)

Answer 2

1. animals of the class reptilia normally have what kind of skeleton?
Internal boney skeleton.

2. is it possible for a vertebrate to have teeth, but no jaws? give an example.
Yes. Some of the "sucking" fish have teeth on their tongues. Check out things like lampreys and hagfish.

3. name the class of vertebrate which has these characteristics: no feathers, no scales, no hair, has legs, bony skeleton, no teeth, has jaws.
Sounds like amphibians to me

4. give 5 vertebrates you see everyday. write the name and class they are found.
I see
cat
dog
parrot
koi carp
human being

Answer 3

1. Bony Endoskeleton
2. dunno
3. Amphibians have little teeth on the jaw and even on other bones, like the palatinum. But as I read in German wikipedia, apparently, not all Amphibians do have teeth.

4. George, Mary, Peter, Frank and Lilly, they all have no class

Answer 4

well- since I volunteer to answer- Gills- protochordates eg Amphioxus, Fishes, tadpole of frog- what is common in them - they live in water and gills require water medium for Oxygen uptake, gills are highly vascular , single - circuit circulation, lower metabolic rate , can survive on minimum oxygen- water has little oxygen. Lungs- lung fishes (exceptions), frog, toad -Amphibians, (In water they breathe through skin.), All birds, reptiles including water snakes, all mammals Mammals have a higher metabolic rate, require quicker exchange, do not all live in water, even whales use lungs and have to come to surface they have a very efficient system of double circuit circulation, wherein gills do not have a role lungs have a higher surface area and can be easily placed in body and be protected.