Intermediate, B.Sc, All semester to subject

 Periodic Properties Modern periodic law state that the physical and chemical properties of elements are periodic functions of atomic number, i. e. , after certain interval of atomic number, properties of elements are repeated. The elements having same electron configuration of outer shells are found in the same group. As most of the properties of an element are dependent on its outermost electronic configuration ; So the elements of a particular group having similar electronic configuration show similarity in properties.          The periodic in the properties of elements is due to the periodicity in the number of valence electronic of elements. If elements having similar valence electrons are grouped together, their properties are also similar. Thus, the periodic repetition or periodicity must be due to the repetition of similar electronic configuration of outermost shells after certain intervals. There are so many properties which are peri...

                                      WHAT IS MONOCYSTIS MONOCYSTIS             Monocytis (Gr., Mono=Single+kystis=bladder) is a gregarine parasite of sporozoa. Its life cycle is completed in one host only. There are two forms of gregarines are recognized, which exhibits sexual reproduction only i.e., acephaline and cephaline. In acephaline forms, the body is not divided in to chambers and anterior in does not bear and organ for attachment. Thus, the monocytis is an but the cephaline forms possesses the chambered body as well as the organ for attachment. Thus, the monocystis is an acephaline gregarine. The various species of Monocystis are M. agilis; M. pheretimi; M.lumbrici; M.lloidi; M.beddardi and M. bengalensis, which parasitize the common earthworms. Besides Monocystis, there various allied genera like Nematocytis. Enterocytis, Rhabdocydtis; Dendrocystis; Ap...