What is photosynthesis? Explain its mechanism.

The pancreas is made up of two parts $A$ and $B$. The part $A$ secretes insulin whereas part $B$ secretes pancreatic juice. $(a)$ Which part is functioning as an endocrine gland? Why? $(b)$ What is insulin and what effect does it have in the body? $(c)$ Name the disease which can be treated by giving insulin injection. $(d)$ What does pancreatic juice contain? Where does pancreatic juice go? $(e)$ Name the life process in which pancreatic juice is made use of.

Is 'nutrition' a necessity for an organism? Discuss.

State the difference between nutrition in plants and animals.

The diagram below shows the human alimentary canal. $1$, $2$, $3$ and $4$ are four different organs that are parts of the canal.
$(i)$ Which of the labelled parts represents the liver?
(ii) Which of the following will be adversely affected in Mr. Ayub's body if his pancreas is malfunctioning, given that the pancreas secretes the lipase enzyme?

The correct order of steps occurring in nutrition in animals is: