TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Filter feeders called rotifers collect digestive and excretory wastes in cloacal bladder primitive organ.

SOLUTION: Filter feeders called rotifers collect digestive and excretory wastes in what primitive organ?

PROBLEM: Water leaves ponds and lakes through evaporation and also as outflow.

SOLUTION: Water leaves ponds and lakes through evaporation and also as what?

PROBLEM: The cytoplasm is divided during cytokinesis.

SOLUTION:
What is divided during cytokinesis?