#STOMATA #TRICKS #PHARMACOGNOSY #GPAT #NIPER #RRB #ESIC #PHARMACIST EXAMS

#Paracytic stomata also called as rubiaceous stomata in which guard cells arranged parallel with subsidiary cells. e.g. Coca, Senna #Diacytic stomata also called as caryophallaceous stomata in which guard cells arranged perpendicular with subsidiary cells. e.g. Vasaka, peppermint, spearmint #Anisocytic stomata also called as crusiferous stomata in which guard cells are covered with three subsidiary cells out of which one is smaller than other two cells. e.g. Belladona, datura, stramonium, Vinca. #Anomocytic stomata also called as Ranunculaceous stomata in which guard cells are covered with irregular subsidiary cells. e.g. Digitalis, buchu, lobelia #Actinocytic stomata in which guard cells are covered with radially arranged subsidiary cells #Primary function of stomata is gaseous exchange while secondary function is transpiration #Transpiration is process of water passing out from the surface of a plant or leaf #Stomata may present in leaf, stem, flower, fruit but not in roots #stomata are present on the stem of ephedra #stomata are present on the flower of clove #stomata are present on the fruit of fennel #depending upon the type of guard cells and arrangement of subsidiary cells, stomata are divided into different types as moss, gymnospermous, gramineous, dicotyledonous #depending upon arrangement of subsidiary cells dicotyledonous stomata divided into paracytic, diacytic, anisocytic, anomocytic & actinocytic stomata