Fundamental characters of chordatesकॉर्डेट के मूलभूत लक्षण

NCERT Fig 4.16 · interactive diagram

Parts and their functions

• Dorsal hollow nerve cord (पृष्ठीय खोखली तंत्रिका रज्जु) — Single, dorsal and hollow (non-chordates: ventral, solid, double).
• Notochord (पृष्ठरज्जु (नोटोकॉर्ड)) — Rod-like support; in vertebrates replaced by the vertebral column in adults.
• Pharyngeal gill slits (ग्रसनी क्लोम छिद्र) — Pharynx perforated by paired gill slits (absent in non-chordates).
• Gut (heart is ventral) (आहार नाल (हृदय अधरीय)) — Chordate heart lies ventral to the gut.
• Anus (गुदा) — The tail continues beyond this point.
• Post-anal tail (गुदा-पश्च पूँछ) — Part of the body behind the anus — present in chordates.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 4.16. Report a mistake