Q. Renal portal system is
A) Present in all vertebrates
B) Present in all chordates
C) Absent in mammals
D) Present in all mammals
Explanation
Renal portal system is well developed in fishes and amphibians, reduced in reptiles and birds and is absent in mammals.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.