Define the term hormone.

Distinguish between Diabetes mellitus and Diabetes insipidus (endocrine gland concerned).

Name the mineral elements required for: (a) Clotting of blood (b) Synthesis of thyroxine

Alpha cells of Pancreas secrete: (a) Glycogen (b) Glucose (c) Glucagon (d) Insulin

The hormone that induces vigorous contractions of the uterus in a pregnant mother is: (a) Oestrogen (b) Prolactin (c) Oxytocin (d) Progesterone

Match the items given in Column I with the most appropriate ones in Column II and rewrite the correct matching pairs: Column I Column II Hyposecretion of Thyroxine in adults Diabetes insipidus Hyposecretion of Insulin Myxoedema Hypersecretion of Growth hormone in childhood Dwarfism Hyposecretion of ADH Gigantism Hypersecretion of Thyroxine Diabetes mellitus Exophthalmic goitre Cretinism

State the exact location of the following structures: (a) Thyroid gland (b) Dura mater (c) Amniotic fluid (d) Papillary muscles (e) Islets of Langerhans

Match the items in Column I with those in Column II: Column I Column II Leydig cells Lack of thyroxine in children Stoma 12 pairs Ova Testosterone Cranial nerve Diffusion of respiratory gases Cretinism Haploid cells 31 pairs Diploid cells

Assertion (A): Deficiency of Antidiuretic hormone causes an increase in urination. Reason (R): Antidiuretic hormone acts on the kidney to reabsorb water from the kidney tubules. (a) A is True and R is False (b) A is False and R is True (c) Both A and R are True (d) Both A and R are False

Observe the following picture, identify the defect and the cause of the defect. (a) Simple goitre, under secretion of thyroxine. (b) Ex-ophthalmic goitre, over secretion of thyroxine. (c) Simple goitre, over secretion of thyroxine. (d) Ex-ophthalmic goitre, under secretion of thyroxine.

Choose the odd one out from the following terms and name the category to which the others belong: (a) Auxin, Oxytocin, Gibberellin, Cytokinin (b) Growth Hormone, Vasopressin, Thyroid Stimulating Hormone, Gonadotropic Hormone (c) Urochrome, Urea, Uric acid, Nucleic acid (d) Cervix, Chordae Tendinea, Papillary Muscles, Sinoatrial node (e) Morula, Blastocyst, Oviduct, Foetus

Arrange the terms in each group in the correct order. Write them in a logical sequence beginning with the term that is underlined. (a) Palisade cells, Cuticle, Upper epidermis, Spongy cells. (b) Hepatic portal vein, Stomach, Hepatic vein, Liver. (c) Cyton, Dendrites, Synaptic cleft, Axon endings. (d) Insulin release, High blood sugar, Lowers blood sugar, Stimulates glucose uptake from blood. (e) Sperm duct, Seminiferous tubule, Epididymis, Efferent ducts.