Page 3 - WS-2

Q12. How is cross breeding useful in animals? Explain with the help of an 2
example.
Q13. The method given below is an important method of improving crop yield. 2

(a) Name the method shown in the above picture
(b) How are the crops grown by above method useful to the farmers?
(one point)
(c)‘Developing varieties of desired agronomic characters help to give
higher productivity’. Explain.
Q14. (a) Mixed cropping is employed to minimise risk and as an insurance 3
against crop failure due to abnormal weather conditions. Enlist atleast two
criteria for the selection of crops for mixed cropping.
(b) If there is low rainfall in a village throughout the year, what measures
will you suggest to the farmers for better cropping?(any two)
Q15. Cattles are considered to be the key assets in our day-to-day food 3
consumption. Since ages, Cattles have been an integral segment in our
livelihood, especially from the perspective of food. Cattle farming or Cattle
ranching can be defined as the large-scale rearing of cattle and raising
them for various agricultural purposes.

(a) Why the floor of the cattle shed needs to be sloping?
(b) Write at least two desired qualities of animal produced by cross-
breeding Red Sindhi and Jersey.
(c) State two ways to achieve humane farming in cattle farming.
Q16. A farmer is investigating the best method to control pests. The same crop 3
is grown in two fields.
In field A a predator of the pest is introduced. In field B the pests are
sprayed several times with a pesticide. The results of the investigation are
shown on the graph.