MPSC PYQScienceप्राणिशास्त्रenglish
Choose the correct statements from the following. (a) Polychaetes of class Annelida have open circulatory system. (b) Hirudinia of class Annelida has closed circulatory system.
A.Only (a) is correct
B.Only (b) is correct
C.(a) and (b) both are correct
D.(a) and (b) both are correct
Correct answer: D