9th Class Science Sample Paper Sample Paper - 3 Term - 1

  • question_answer
      (a) How are new varieties of poultry birds with desired traits produced? (b) Mention any four desirable traits for which new varieties are produced. (c) List the management practices that are common between dairy and poultry farming. Or (a) Write a short note on marine fisheries. (b) Which factors should be taken into consideration for fish culture?


      (a) By cross breeding between Indian (Indigenous) and foreign (exotic) poultry birds, desired traits are produced.                                                                                                                                                                                                (1) (b) Following are the four desirable traits for which new varieties are produced (i) Number and quality of chicks. (ii) Dwarf broiler parent for commercial chick production. (iii) Summer adaptation capacity. (iv) Tolerance to high temperature.                                                                                                                                         (2) (c) The management practices that common between dairy and poultry farming are (i) Proper arrangement for housing. (ii) Proper arrangement for light. (iii) Proper arrangement of nutrition.                                                                                                                                      (2) Or (a) India's marine fish area include 7500 km long coastline and deep sea beyond it. Marine fish are caught using many kinds of fishing nets from fishing boats. The yields are increased by locating large schools of fish, where large quantities of fishes can be found.                                                                                                                            (1) Popular marine fish varieties are pomphret, mackerel, tuna, sardines and Bombay duck.                                               (1) Large schools are located by using satellites and echo sounders.                                                                                (1) (b) The three important factors to be considered for fish culture are (i) Topography, i.e., location of pond. (ii) Water resources and their quality. (iii) Soil quality.                                                                                                                                                                                  (2)

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