Which of these structures is involved in blood circulation in cockroach?
A. Ostia
B. Malpighian tubules
C. Ommatidia
D. Phallomere
Answer:
A. Ostia
Which of these structures is involved in blood circulation in cockroach?
A. Ostia
B. Malpighian tubules
C. Ommatidia
D. Phallomere
Answer:
A. Ostia