Question

Assertion:
Intercropping checks the population of insects.
Reasons:
Plants pests can be controlled biologically by their natural parasites and pathogens.

a. If both Assertion and Reason are true and Reason is the correct explanation of Assertion
b. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
c. If Assertion is true but Reason is false
d. If both Assertion and Reason are false

Answer 1

Intercropping signifies simply growing two or more crop types on one field. The practice of intercropping has been around since farmers began farming and yielding. Modern farming has replaced the intercropping with the monocropping due to which chances of pests increases in the yield. Intercropping has various benefits over monocropping. A parasite is an organism that eats the pest.

Complete answer:
• Favourable outcomes of intercropping on plant harm and loss in income ultimately depend upon whether or not insects are repelled or simply diverted to one particular crop, preferably the least precious or the maximum tolerant
• Multiple cropping may be an effective problem of cultural pest control, imparting that picks on cropping styles may be made at the perfect time and that it satisfies the farmer's socio-economic objectives
• Components of intercrops are regularly less damaged with the useful resource of pest and sickness organisms than whilst grown as sole plants, but the effectiveness of this escape from assault frequently varies unpredictably.
• The presence of associated plant life in the intercrop can purposely attack getaway in three techniques, all concerning decreasing population increase fee of the attacking organism. In one, the pals motive flowers of the attacked factor to be less genuine hosts
• In the second, they intrude at once with sports of the attacker; and in the 1/3, they trade the environment inside the intercrop so that herbal enemies of the attacker are favoured.
• Under some conditions, intercropping can usefully contribute to the control of pest or disease populations and the cut-price of yield loss.

Hence, the correct answer is option (B).

Note: Intercropping can be of three types which are mixed cropping where the basic component crops are mixed in available space, second is the row cropping where one row has the same species and the other alternative row have different same cropping species, the third type is temporal cropping which uses the practice of sowing a fast-growing crop with a slow-growing crop.