Q130 of 525 Page 254

What do you meant by the term Craniata?

Animals which have cranium (brain box) around the brain are termed as Craniata.

128

Name the phylum in which dorsal nerve tube, notochord and pharyngeal gill clefts are present.

129

Give one example of

(a) Urochordata; (b) Cephalochordata.

131

What is the position of Notochord in the body of (a) Urochordata; (b) Cephalochordata?

132

Give two examples of Cyclostomata.