Differentiate between agnatha and gnathostomata. Give five differences between them
Dear Student
1. In Agnatha, true jaws are absent.
1. In Gnathostomata, true jaws are present.
2. Paired appendages are absent.
2. Paired appendages are present.
3. Internal ear has two semicircular canals.
3. Internal ear has three semicircular canals.
4. Notochord persistent in adults.
4. Notochord persists or replaced by vertebrea.
5. Example: Cyclostomes
5. Example: Great white shark, Fire salamander
Regards
1. In Agnatha, true jaws are absent.
1. In Gnathostomata, true jaws are present.
2. Paired appendages are absent.
2. Paired appendages are present.
3. Internal ear has two semicircular canals.
3. Internal ear has three semicircular canals.
4. Notochord persistent in adults.
4. Notochord persists or replaced by vertebrea.
5. Example: Cyclostomes
5. Example: Great white shark, Fire salamander
Regards