What is the difference between pepsin and trypsin?

Shyam lives in a village. When there is power cut he goes to sleep beneath a tree at night. An old man saw him sleeping under a tree and advised him not to sleep under a tree at night. Can you give a suitable reason?

Which part of the body secretes bile? Where is bile stored? What is the function of bile?

Name the liquid matrix of the blood. What does it contain? List any two functions of blood.

Name three different glands associated with the digestive system in humans. Also, name their secretions.