Feeding and Digestion in Amoeba

Amoeba is a microscopic single-celled organism found in pond water. It pushes out one, or more finger-like projections, called pseudopodia or false feet for movement and capture of food. Amoeba feeds on some microscopic organisms. When it senses food, it pushes out pseudopodia around the food particle and engulfs it. The food becomes trapped in a food vacuole. 

It is said food vacuole in Amoeba is similar to the small intestine of human beings. Do you agree? Explain.

Amoeba uses finger-like projections to capture food particles. The picture shows the first step of the process.

Identify from the options, which is the next and last steps of capturing food.

A unicellular organism X having no fixed shape ingests a food particle by forming temporary finger-like projections Y. The food particle is engulfed with a little surrounding water to form a temporary sac-like structure Z inside it. Enzymes from the surrounding cytoplasm enter into Z and break down food into small and soluble molecules by chemical reactions. The digested food is absorbed directly into the cytoplasm by the process of diffusion. Identify X, Y and Z.