Choose the ODD one out of the following terms given and name the CATEGORY to which the others belong:

(i) Aqueous humour, Vitreous humour, Iris, Central canal

(ii) Formalin, Iodine, DDT, Lime

(iii) ACTH, TSH, ADH, FSH

(iv) Phosphate, RNA, Sugar, Nitrogenous base

(v) Bile, Urea, Uric acid, Ammonia

Given below are groups of terms. In each group the first pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.

Example: Oxygen : Inspiration : : Carbondioxide : Expiration

(i) Eye : Optic nerve : : Ear : ……………

(ii) Cytoplasm : Cytokinesis : : Nucleus : ……………

(iii) TT : Homozygous : : Tt : ……………

(iv) Foetus : Amnion : : Heart : ……………

(v) Adenine : Thymine : : Cytosine : ……………

The diagram given below represents the location and structure of an endocrine gland. Study the same and answer the questions that follow:

(i) Name the endocrine gland shown in the diagram.

(ii) Name the secretion of the gland which regulates basal metabolism.

(iii) Name the mineral element required for the synthesis of the above mentioned hormone.

(iv) Name the disease caused due to under secretion of the above mentioned hormone in children.

(v) Name the disease caused due to hypersecretion of the above mentioned hormone.

Study the diagram given below which represents a stage during the mitotic cell division and answer the questions that follow:

(i) Identify the stage giving suitable reasons.

(ii) Name the parts numbered 1 and 2.

(iii) What is the technical term for the division of nucleus?

(iv) Mention the stage that comes before the stage shown in the diagram. Draw a neat labelled diagram of the stage mentioned.

(v) Which is the cell division that results in half the number of chromosomes in daughter cells?