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Microbes in Agriculture

Trichoderma s...

Question

Trichoderma species are free living and are effective biocontrol agents of several plant pathogens. They are:

A

Bacteria

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B

Fungi

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C

Viruses

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D

Nematodes

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Solution

The correct option is B Fungi
Trichoderma are fungi species.
Bacteria and viruses are also biocontrol agents.

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Q. A biological control which is effective biocontrol agent for several plant pathogens :

Q. Match the following columns and select the correct option:

	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

Q. Select the correctly matched pairs regarding the pest and its biocontrol agent.

A. Ladybird beetle - Mosquitoes
B. Dragonflies - Aphids
C. Bacillus thuringiensis - Caterpillars of butterfly
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A. These are species-specific, broad spectrum insecticidal applications.
B. The baculoviruses of the genus Nucleopolyhedrovirus are majorly used as biocontrol agents
C. They have been shown to have no negative impact on target insects
D. These are pathogens that attack insects and other arthropods

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