Animal Kingdom Question 390

Question: Which one of the following exhibits concentric “tube within tube” plan [MP PMT 1999]

Options:

A) Arthropoda

B) Oligochaeta

C) Mollusca

D) Echinodermata

Show Answer

Answer:

Correct Answer: B

Solution:

Annelids like oligochaetes exhibit concentric ?tube within a tube? body plan with multicellularity and bilateral symmetry.