Ladybird and dragonfly are very useful in get | vedclass

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(B) In biological control of pests,certain insects act as natural predators. Ladybird beetles are well-known predators that feed on aphids,which are s

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aphids and mosquitoes

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(B) In biological control of pests,certain insects act as natural predators. Ladybird beetles are well-known predators that feed on aphids,which are small sap-sucking insects that damage plants. Dragonflies are effective predators that feed on mosquitoes,thereby helping to control their population. Therefore,ladybird and dragonfly are useful in getting rid of aphids and mosquitoes,respectively.

Column $I$	Column $II$
$(a)$ Dragonflies	$(i)$ Biocontrol agents of several plant pathogens
$(b)$ Bacillus thuringiensis	$(ii)$ Get rid of aphids and mosquitoes
$(c)$ Glomus	$(iii)$ Narrow spectrum insecticidal applications
$(d)$ Baculoviruses	$(iv)$ Biocontrol agents of lepidopteran plant pests
	$(v)$ Absorb phosphorus from soil

Ladybird and dragonfly are very useful in getting rid of $........$ respectively.

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