Which invertebrate has an open circulatory system, a segmented body, and an exoskeleton made of protein and chitin?

Which invertebrate has an open circulatory system, a segmented body, and an exoskeleton made of protein and chitin?

Which invertebrate has an open circulatory system, a segmented body, and an exoskeleton made of protein and chitin?




A. centipede
B. nautilus
C. earthworm
D. nematode



Answer: A