$CATEGORY: Science - Khan Academy/7.Control and Coordination/7.Control and Coordination--Coordination in Plants

//Multiple Choice

Which plant hormone is responsible for cell elongation in stems? {
    =Auxin
    ~Cytokinin
    ~Gibberellin
    ~Abscisic acid
}

Which plant hormone promotes fruit ripening? {
    ~Auxin
    ~Cytokinin
    =Ethylene
    ~Gibberellin
}

Which hormone helps in closing the stomata during water stress? {
    ~Cytokinin
    =Abscisic acid
    ~Gibberellin
    ~Ethylene
}

Which hormone is involved in breaking seed dormancy? {
    ~Auxin
    =Gibberellin
    ~Ethylene
    ~Abscisic acid
}

Which plant hormone stimulates cell division? {
    ~Auxin
    =Cytokinin
    ~Abscisic acid
    ~Ethylene
}

//True or False

Auxins are responsible for phototropism in plants. {T}

Cytokinins promote fruit ripening in plants. {F}

Gibberellins break seed dormancy and promote germination. {T}

Abscisic acid is a growth-promoting hormone. {F}

Ethylene is the only gaseous plant hormone. {T}

//Fill in the blanks

The hormone responsible for phototropism in plants is __________. {
    =Auxin
    ~Cytokinin
    ~Gibberellin
}

The plant hormone __________ delays leaf senescence (aging). {
    ~Abscisic acid
    =Cytokinin
    ~Ethylene
}

The gaseous hormone __________ is responsible for fruit ripening. {
    ~Auxin
    =Ethylene
    ~Gibberellin
}

The hormone __________ is also known as the stress hormone in plants. {
    ~Auxin
    =Abscisic acid
    ~Cytokinin
}

The hormone __________ promotes bolting in plants like cabbage. {
    =Gibberellin
    ~Auxin
    ~Cytokinin
}

//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Auxin -> Cell elongation in stems
=Cytokinin -> Stimulates cell division
=Ethylene -> Promotes fruit ripening
=Gibberellin -> Breaks seed dormancy
=Abscisic acid -> Stress hormone, closes stomata
}


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