YOU ONLY CAN SAVE YOU FROM DISEASES

          Points To Remember Endocrine glands : These are ductless glands which secrete hormones directly into the blood stream. Hormones : Non-nutrient chemicals synthesised in trace amount by Endocrine glands that act as intracellular messengers and are specific in their action which are transported by blood from site of production to site of action. Hypothalamus :    It is basal part of diencephalon.  Has neurosecretory cells called nuclei which produce hormones to regulate the synthesis and secretion of pituitary gland hormones.    Two types of hormones released are : Releasing hormones : Simulate secretion of pituitary hormones, e.g., Gonadotrophin releasing hormone stimulates pituitary gland to synthesise gonadotrophins. Inhibiting hormones : Inhibit secretions of pituitary hormones, e.g., Somatostatin inhibits secretion of growth hormone. Pituitary Gland :    Located in bony cavity called as sella tursica.    A...

          Classification : Points to Remember  Artificial System of Classification      By Carolus Linnaeus, based on androecium structure and vegetative characters.  Natural System of Classification      Based on natural affinities among organisms      Included external as well as internal features      By Geroge Bentham and J.D. Hooker  Phylogenetic System of Classfication      Based on evolutionary relationships between the various organisms      By Engler and Prantl      Later on By Hutchinson Numerical Taxonomy :  Carried out using computers  Based on all observable characteristics    Data processed after assigning number and codes to all the characters. Advantages : Each character gets equal importance and a number of characters can be considered. Cytotaxonomy :  Based on cytological informations.  Gives importance to chromosome number, stru...