Problem:
Question 1: Amoeba: What is the position of the contractile vacuole relative to the advancing pseudopodium?
Question 2: Paramecium: Do they have a "head" end and a "tail end"? Also describe their behavior when they confront an object that blocks their path. Do all of the cilia beat in a synchronized manner? Are all the cilia of the same length and are they evenly distributed on the surface of the organism?
Explain thoroughly.