Escience zone

                               Human Reproduction The Male Reproductive Part:-                                                 It includes a pair of the testis, glands, and external genitalia. 1. The testis is present outside the abdominal cavity within a pouch-like structure called Scrotum. 2. The scrotum helps in maintaining its temperature - 2C lower than normal body temperature, because it is necessary for spermatogenesis. 3. Each testis has 250 compartments called testicular lobules. 4. Each testicular lobules contain 2-3 seminiferous tubules 5. Seminiferous tubules contain Male germ cells(Spermatogonia) and steroli cells, Male germ cells meiotically divide and form sperms. 6. Leydig's cells provide nourishment to the sperms and secrets of the Androgens hormone. ...

                                            Transpiration of Water and Food Means of Transport 3 suggests that of transport in plants: Diffusion Facilitated Diffusion Transport Transpiration Diffusion:- movement of molecules from high concentration to low concentration while not a semi-permeable membrane. · Slow method · No expenditure of energy · Diffusion depends upon: Concentration gradient, porousness of the membrane, Temperature, Pressure and Size of the substance. F aciilated Transport :- · In facillated diffusion, the membrane proteins ar concerned. they supply a web site for hydrophilic   molecules to have the membrane and no energy is needed.   · Proteins concerned within the method type channels which can invariably be opened or controlled. Facillated diffusion is incredibly specifi...

                  Stratergies for improvement in   food production Animal Breeding :- Mating and croos of animal to enhance its varity or phylogeny quality or yield . Animal Husbandary :- The agricultural apply of breeding   and raising eutherian mammal ,e.g. cow,pig,buffaloes,horses etc. Breeding :- Bee keeping production of honey,Dairy farm is that the management   of animal for milk and its production for human consumption. Fisheries :- An trade dedicated to rearing ,catching,processing of commerce of fish shellfish or alternative aquatic animals. Green Revolution :- Dramatic increase in food production in Nineteen Sixties as a results of caultivation of high yielding illness resistance varities of wheat rise and maize etc. developed through breeding techniques is reffered to as revolution . Mutual Breeding :- Obtaining of crop plants with fascinating characters by artifi...