Protonephridia are the excretory structures present in …………. (AMU 2005)
A. Planaria
B. Roundworm
C. Tapeworm
D. Prawn
Answer:A
Protonephridia are the excretory structures present in …………. (AMU 2005)
A. Planaria B. Roundworm C. Tapeworm D. Prawn