Question

Question 1 1 pts Compared with sponges, cnidarians have a wider array of cell types, permitting more sophisticated tissue functions. These functions include: Select all that apply. secretion of digestive enzymes. epithelial muscle contraction/movement. the ability to perform coordinated filter feeding. the ability to sense the environment via a network of nerve cells. Next → MAR

Answer 1

All the options are correct.

a. Cnidarians have an incomplete digestive system and perform extracellular digestion by secreting digestive enzymes into the food which is then absorbed by the digestive tract.

b. They have contractile epithelial cells which exhibit epithelial contraction/ movement.

c. They have the abilitiy to perform filter feeding. Eg - Moon jellyfish

d. They have specialized nerve cells which can sense the environment.