In adult lamprey the Notochord is _____?

بالغ لیمپری میں نوٹوچورڈ _____ ہے؟

Absent

Persistent

Reduced

None of these

Explanation

In adult lampreys, the notochord remains throughout life and functions as the primary axial support structure.

Unlike vertebrates with fully developed backbones, lampreys lack true vertebral bones, relying on the persistent notochord for structural support.