Q22 of 525 Page 259

Distinguish between Nonchordata and Chordata.

Difference between Notochordata and Chordata:

Notochordata	Chordata
Notochord is absent.	Notochord is present.
Gill slits are absent in most nonchordates.	Pharynx has gill slits at some stage of life.
True internal skeleton presnt.	No true internal skeleton present.

Write down four main characters of gymnosperms.

Write down four main characters of angiosperms.

How do animals of Porifera differ from animals of Cnidaria?

Distinguish between polyp and medusa.