Q. Which is a condition that in connected in the both external and internal structures and it is first found in which phylum of the animal kingdom
A) Mutagenesis-Platyhelminthes
B) Metagenesis-Coelenterata
C) Appendages-Arthropoda
D) Metamerism-Annelida
Explanation
A condition that is connected with both internal and external structures is true segmentation or metamerism. It first appears in phylum-Annelida
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.