Chapter 18

Question 1

All animals are

Answer 1

heterotrophic

Question 2

Which of the following is correctly matches?
A) a fish-radial symmetry
B) protostomes-the opening formed during gastrulation becomes the anus
C) endoderm-lines the digestive track
D) vertebrates-most animals alive today are these
E) deuterostomes-lack true tissues

Answer 2

C, endoderm-lines the digestive track