Phylum chordata is divided into how many subphyla?

Which of the following statements are true for the phylum-Chordata? (a) In urochordata notochord extends from head to tail and it is present throughout their life. (b) In vertebrata notochord is present during the embryonic period only. (c) Central nervous system is dorsal and hollow. (d) Chordata is divided into 3 subphyla: Hemichordata,Tunicata and Cephalochordata.

Which of the following statements are true for the phylum-Chordata? (a) In urochordata notochord extends from head to tail and it is present throughout their life. (b) In vertebrata notochord is present during the embryonic period only. (c) Central nervous system is dorsal and hollow. (d) Chordata is divided into 3 subphyla: Hemichordata,Tunicata and Cephalochordata.

Phylum Hemichordata was considered as sub-Phyluym of Chordata. Give reason.

How many classes are crystals divided into? How many Bravais lattice are there?

Answer the following questions: Into which phyla is Non-Chordata divided? In which three subphyla are Chordates divided?

Phylum Chordata is named after the occurrence of

Phylum chordata fundamental character and classification

List four distinctive characters of phylum chordata. Classify different chrodats into classes.

Hemichordata was carlier considered as a subphylum under phylum-Chordata. But now, it is placed as a separte phylum under