In a few forms, the shell is coiled in the form of a helicoid spiral
A. 1, 2 and 3 only
B. 1, 3 and 4 only
C. 1, 2 and 4 only
D. 2, 3 and 4 only
Answer:C
In a few forms, the shell is coiled in the form of a helicoid spiral
A. 1, 2 and 3 only B. 1, 3 and 4 only C. 1, 2 and 4 only D. 2, 3 and 4 only