Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. The involvement of teachers in the scheme of education proves to be a mare's nest.

a successful idea
a false invention
a noble thing
a timely step

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Idiom
Mutation is

a change which affects the offspring of F2 generation only
a change that is inherited
a factor responsible for plant growth
a change which affects the parents

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Idiom
Will o' the wisp

To act in a foolish way
To have desires unbacked by efforts
To act in a childish way
Anything which eludes or deceives

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