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(iv) October to March is the best period for group A crops
(a) ii and iv
(b) i and ii
(c) i and iii
(d) ii and iii
Q7. 1
Refer to the diagram given above and choose the incorrect statement
about X from the following
(a) Chemicals against X do not damage the crops
(b) X does not form symbiotic association with plant roots
(c) X should be removed after the flower formation
(d) X is removed using khurpi.
Q8. The quality of honey differs from sample to sample. Which of these 1
decides the quality of a honey sample?
(a) Time of the day when the bees collect nectar
(b) Time taken by the bees to build the beehive
(c) Type of flower from which the bees collect nectar
(d) Size of the beehive from which the honey is collected
Q9. Which of the following statements is not true for manures? 1
(a) Manure makes the soil porous
(b) Manures increase the number of friendly microbes
(c) Manures contain more nutrients than chemical fertilizers
(d) Manures are organic in nature
Q10. To enhance fish seed quality, breeding these fish in ponds uses: 1
(a) Hormonal modification
(b) Gene transfer
(c) Hormonal stimulation
(d) Gene abbreviation
Q11. (a) A farmer is advised to use manures in his field to improve the yield 2
which has clayey soil. How will adding of manures improve the soil texture
of his field?
(b) Why is organic farming considered a sustainable agricultural method?