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Assertion (A): Abscisic acid is a stress...

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

A

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C

Assertion (A) is true but reason (R) is false.

D

Assertion (A) is false but reason (R) is true.

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Why is Abscisic acid called stress hormone in plants?

Why is Abscisic acid also known as stress hormone?

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

    A
    If both assertion and reason are true and reason is the correct explanation of assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but reason is false
    D
    If both assertion and reason are false
  • Assertion :- ABA is stress hormone. Reason:- ABA causes abscission of old leaves and fruits.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.
  • Similar Questions

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

    Why ABA is called stress hormone in plants?

    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 ?

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

    Assertion :- Insulin act as a antidiabetogenic hormone. Reason:- Deficiency of Insulin produce polyuria condition