Which of the Following is Descriptive of Protostomes

Question

Which of the following is descriptive of protostomes?
A) spiral and indeterminate cleavage, blastopore becomes mouth
B) spiral and determinate cleavage, blastopore becomes mouth
C) spiral and determinate cleavage, blastopore becomes anus
D) radial and determinate cleavage, blastopore becomes anus
E) radial and determinate cleavage, blastopore becomes mouth

Accepted Answer

Protostomes undergo spiral and determinate cleavage, and the blastopore becomes the mouth. This distinguishes them from deuterostomes, which undergo radial and indeterminate cleavage, and the blastopore becomes the anus.