(B) Bordeaux mixture is a fungicide used to control various fungal diseases in plants. It is prepared by mixing copper sulphate $(CuSO_4)$ with lime (

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(B) Bordeaux mixture is a fungicide used to control various fungal diseases in plants. It is prepared by mixing copper sulphate $(CuSO_4)$ with lime (calcium hydroxide,$Ca(OH)_2$) in water. The term 'Milk of lime' refers to a suspension of calcium hydroxide in water,which is the correct ingredient used in this preparation.

Class 12 Biology Microbes in Human Welfare Microbes as Biocontrol Agents

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Bordeaux mixture can be prepared by mixing copper sulphate with:

A
Sodium chloride
B
Milk of lime
C
Calcium sulphate
D
Limestone

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Chapter

Microbes in Human Welfare

Subtopic

Microbes as Biocontrol Agents

Natural insecticide obtained from neem is

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Pyrethrin is extracted from:

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Which one of the following is an example of carrying out biological control of pests or diseases using microbes?

MediumAIPMT 2012

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Which of the following is an incorrect pair?

Medium

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Match the column $I$ with column $II$ and select the correct option.
Column $I$ (Pathogen) Column $II$ (Host)
$a$. $Bacillus$ $papillae$ $i$. $Gypsy$ $moths$
$b$. $Beauveria$ $bassiana$ $ii$. $Cabbage$ $worms$
$c$. $Nosema$ $locustae$ $iii$. $Aphids$
$d$. $Nucleopolyhedroviral$ $virus$ $iv$. $Grasshoppers$

Column $I$ (Pathogen)	Column $II$ (Host)
$a$. $Bacillus$ $papillae$	$i$. $Gypsy$ $moths$
$b$. $Beauveria$ $bassiana$	$ii$. $Cabbage$ $worms$
$c$. $Nosema$ $locustae$	$iii$. $Aphids$
$d$. $Nucleopolyhedroviral$ $virus$	$iv$. $Grasshoppers$

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