All chordates possess the following features except:

Dorsal nerve cord

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Paired gill pouches

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Notochord

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Amnion

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is A Amnion
Amnion is present only in mammals, birds, and reptiles. It is the innermost layer that encloses the embryo of these classes. It is not present in all the chordates. While notochord, dorsal nerve cord, and paired gill pouches are present in all the chordates. Thus, 'amnion' is the right answer.

Suggest Corrections