In higher chordates, pharyngeal gill slits are

Absent

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

Present in the embryo

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

Replaced by abdominal gill slits

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

Replaced by thoracic gill slits

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

Open in App

Solution

The correct option is
B
Present in the embryo
EXPLANATION: In the primitive chordates, gill slits are used to filter food particles. They are present in the mouth portion of the body. In fishes and amphibians, gill slits are used for gas exchange. But In the higher chordates, gill slits are found only in the embryonic stages.

Figure : Chordates

Suggest Corrections