What is the colour of the pigment chlorophyll found in plants?

In the human digestive system, bile is secreted by:

What is photosynthesis? Explain its mechanism.

The length of the small intestine in a human adult is about: (in $\text{ m}$)

What are biochemical catalysts called?

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 $K$.