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ABA (Abscisic Acid) is called a stress h...

ABA (Abscisic Acid) is called a stress hormone.
A. How this hormone overcome stress conditions ?
B. From where where does this hormone get released in leaves ?

Text Solution

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Stress hormone ABA (Abscisic Acid) gives signals to stomata to get closed, whereever there is scarcity of availability of water to the plant. This precents the loss of water through transpiration by leaves. It also increases the tolerance of plants to various kinds of stresses.
B. It (ABA) is realeased or teansported from stem apices to leaves.
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Why ABA is called stress hormone in plants?

Knowledge Check

  • Abscisic acid is called stress hormone as it

    A
    Induces flowering
    B
    Breaks seed dormancy
    C
    Promotes leaf fall
    D
    Promotes stomatal closure.

  • The plant hormone which closses the stomata in stressful condition is

    A
    Cytokinin
    B
    GA
    C
    Auxin
    D
    ABA

  • What is a stress hormone ? Or The hormone produced during adverse environmental conditions is

    A
    Benzyl aminopurine
    B
    Dichlorophenoxy acetic acid
    C
    Ethylene
    D
    Abscisic acid.

    • Similar Questions

    Explore conceptually related problems

    Why is Abscisic acid also known as stress hormone?

    How does abscisic acid acts as stress hormone in drought condition ?

    Assertion (A): Abscisic acid is a stress hormone. Reason (R): Stimulation of ABA occurs in adverse conditions.

    An organ where a hormone shows its effect is called

    Assertion : Abscisic acid (ABA) is also called stress hormone. Reason : ABA increases the tolerance of plants to various kinds of stresses.

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