How does the digestive process in cnidarians differ from sponges?

Explanation:

digestive process in cnidarians differ from sponges

1. i) sponges have intracellular digestive system.

 ii). They feed on planktons by filtering water.  

 iii). Digestion takes place completely in choanocyte cells.

Cnidarians

1. i) Cnidarians are predators and feed on small fish, krill and many small species.

ii )All cnidarians are carnivores and have very simple body structures adapted as predators.

 iii) Cnidarians carry out extracellular digestion. Enzymes break out the food into small particles. Cnidarians have an incomplete digestive system and have only one opening.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.