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Brain and a Spinal cord.
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∙ 12y ago
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What two things are present in all vertebrates but not some chordates?
A distinct brain and gill slits used for respiration as opposed to filterfeeding. Granted, those last ones aren´t found outside the fish class, but other vertebrates still develop them in their embryology.
Are all vertebrates mammels?
All mammals are vertebrates. The two main sections of the animal kingdom are invertebrates and vertebrates- and mammals fall into the vertebrates section!!
what two groups of present-day vertebrates are the descendants of reptiles?
are alligator and snakes
What kingdom are vertebrates in?
Animals with vertebrates are in Kingdom Animalia, and Phylum Chordata.
All animals can be placed in one of two groups what are the two groups?
Vertebrates and invertebrates.
What is unusual about the hepatic portal vein?
The hepatic portal vein in frogs is unusual in that it is divided into two portals, the hepatic and the renal. In higher vertebrates, the hepatic portal system is the only one present.
What two things have to be present for a rainbow to form?
Sfgjh and ghddh
What are two things all plant cells have that animal cells don't have?
1, Cell wall is present in plant cells 2 ,Central vacule is present in plants 3 , chloroplasts are present in plants and absent in animal cells .
What two things need to be present for iron to rust?
Water and oxygen
How many nostrils does a tiger have?
Tigers have 2 nostrils (all land vertebrates only have two; no more and no less).
How are mammals like the birds but unlike the other vertebrates?
Bird and mammals are the only two groups of vertebrates which are warm blooded. Amphibians, reptiles and fish, the other vertebrate groups, are all cold-blooded.
What two type of vertebrates have heart with three chambers?
Reptiles and amphibians are the vertebrates that have three-chamber hearts.
