Differentiate between the following pairs on the basis of what is mentioned in brackets:

Stoma and Stroma (describe its structure)

Differentiate between the following pairs on the basis of what is mentioned in brackets:

Acromegaly and Cretinism (symptoms)

Differentiate between the following pairs on the basis of what is mentioned in brackets:

Diabetes mellitus and Diabetes insipidus (reason/cause)

The diagram below shows the Excretory System of a Human being. Study the same and then answer the questions that follow :

(i) Name the parts labelled 1, 2, 3 and 4.

(ii) Give the main function of the parts labelled 5, 6, 7 and 8.

(iii) Name the endocrine gland which could be added in the diagram and state its location/position.