(i) Natality – Number of live births per 1000 per year. Mortality – Number of deaths per 1000 per year.
(ii) Stoma – The opening in the stomata through which transpired water and respiratory gases pass. Stroma – It is the part/region in the chloroplast where dark reaction of photosynthesis takes place.
(iii) Acromegaly – Overgrowth of certain parts of body like cheek bones etc. due to oversecretion of growth hormone in adults. Cretinism – Dwarfism and mental retardation due to undersecretion of thyroxine in children.
(iv) Transpiration – Stomata/cuticle/lenticels. Guttation – Hydathodes.
(v) Diabetes mellitus – Undersecretion of insulin due to which level of glucose increases in blood. Diabetes insipidus – Undersecretion of Antidiuretic hormone due to which reabsorption of water from kidney tubules becomes less.
