Name a unicellular animal which uses $cilia$ to move food particles into its mouth.

Explain how does Paramecium obtain its food.

Write the balanced chemical equation that represents the process of photosynthesis.

Define "Saprophytic nutrition". Give one example of an organism that exhibits this mode of nutrition.

Which substance is used to remove chlorophyll from a green leaf during photosynthesis experiments?

The partially digested food coming from the stomach of a person enters a long and narrow organ $A$ in his body. The organ $A$ receives the secretion of two glands: liver and pancreas. Liver secretes a greenish-yellow liquid $B$ which is normally stored in the organ $C$. Pancreas secretes pancreatic juice which contains three digestive enzymes $D$, $E$ and $F$. The intestinal juice completes the process of digestion of food. The inner wall of organ $A$ has millions of tiny finger-like projections $G$ which help in the rapid absorption of digested food into the blood stream. The undigested part of food then passes into a wider tube $H$ which absorbs most of the water from the undigested food. The last part of tube $H$ called $I$ stores this undigested food (or waste) for some time. The undigested food is then passed out through opening $J$ as faeces in the process known as $K$.
$(a)$ Name the organ $A$.
$(b)$ Name liquid $B$ and organ $C$.
$(c)$ What are the digestive enzymes $D$, $E$ and $F$?
$(d)$ Name the projections $G$ present on the inner wall of organ $A$.
$(e)$ Name tube $H$, part $I$, opening $J$ and process $K$.