Q16 of 49 Page 85

Which one of the following nutrients is not available in fertilizers?

NPK fertilizers are three-component fertilizers providing nitrogen, phosphorus, and potassium. Iron for plants can come from a number of sources. Ferric oxide is a chemical present in soil that gives dirt a distinctive red color, and plants can absorb iron from this chemical.

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14

Which one of the following fishes is a surface feeder?

 15

Animal husbandry is the scientific management of

(i) animal breeding (ii) culture of animals


(iii) animal livestock (iv) rearing of animals

 17

Preventive and control measures adopted for the storage of grains include

 18

Match the column A with the column B























(A)



(B)



(a) Catla



(i) Bottom feeders



(b) Rohu



(ii) Surface feeders



(c) Mrigal



(iii) Middle-zone feeders



(d) Fish farming



(iv) Culture fishery