Which of the following statement is correct about Unio?
A. Unio has a two-chambered heart
B. Unio has a one-chambered heart
C. Unio has no heart
D. Unio has a three-chambered heart
Answer:D
Which of the following statement is correct about Unio?
A. Unio has a two-chambered heart B. Unio has a one-chambered heart C. Unio has no heart D. Unio has a three-chambered heart