1What is a notochord? Where is it found in the body of a chordate?
2Write five characteristics of phylum Chordata.
3Name the four sub-phyla of phylum Chordata. Why are the first three called Protochordata?
4An adult human has no notochord. Why is a human still called a chordate?
5Why are the sea urchin and the sea cucumber not chordates?
6Write the general features of sub-phylum Vertebrata.
7Differentiate between poikilothermic and homeothermic animals, with examples.
8What are oviparous and viviparous animals? Give two examples of each.
9Name the five classes of vertebrates and give one example of each.