how much groups of invertebrateand vertebratearethere? how much typesof teeth human have?

Answer 1

* Porifera

(alternatively)

* Calcarea
* Silicarea

Subregnum Eumetazoa

* Placozoa
* Radiata (unranked)
o Ctenophora
o Cnidaria
o Trilobozoa †
* Bilateria (unranked)
o Orthonectida
o Rhombozoa
o Acoelomorpha
o Myxozoa
o Chaetognatha
o Superphylum Deuterostomia
+ Hemichordata
+ Echinodermata
+ Xenoturbellida
+ Vetulicolia †
o Superphylum Ecdysozoa
+ Kinorhyncha
+ Loricifera
+ Priapulida
+ Nematoda
+ Nematomorpha
+ Lobopodia †
+ Onychophora
+ Tardigrada
+ Arthropoda
o Superphylum Platyzoa
+ Platyhelminthes
+ Gastrotricha
+ Rotifera
+ Acanthocephala
+ Gnathostomulida
+ Micrognathozoa
+ Cycliophora
o Superphylum Lophotrochozoa
+ Sipuncula
+ Hyolitha †
+ Nemertea
+ Phoronida
+ Ectoprocta
+ Bryozoa
+ Entoprocta
+ Brachiopoda
+ Mollusca
+ Annelida
+ Echiura

All of the above are invertebrate phyla

The Vertebrates are a sub phylum in the phyla Chordata.

Composed of fish , amphibians, reptiles, birds, mammals.

Humans have four types of teeth, incisors, canines, premolars, molars.