Answer:
(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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