what is the difference between hemichordata and chordata?
|1 They are exclusively marine and small forms and primitive in nature||1 These are found in all type of environments and include small as well as large forms,these are advanced|
|2 Brain, cranium, vertebral column,jaws and paired appendages are absent||2 They process brain,cranium ,vertebral column jaws.|
|3 Body is vermiform and have a large proboscis||3 They have a well formed body with a skeletal system and muscles attached|
|4 They do not have a notochord||4 These have a notochord|