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The hormone 'X' does the following funct...

The hormone 'X' does the following functions.
(i) Induces seed dormancy.
(ii) Inhibits seed germination.
(iii) Stimulates closure of stomata. The hormone 'X' should be

A

ABA

B

ethylene

C

GA

D

cytokinins

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • Which of the following hormone promotes seed dormancy and bud dormancy?

    A
    Auxin
    B
    GA
    C
    Cytokinin
    D
    ABA

  • Read the following functions performed by plant hormones: a) regulates dormancy b) inhibits metabolism c) stimulates stomatal closure d) inhibits seed germination Which of these is involved in ALL of the above functions?

    A
    Indole acetic acid
    B
    Naphthalene acetic acid
    C
    Indole butyric acid
    D
    Abscisic acid

  • Read the given statements and identify the plant hormones X,Y and Z. (i) Hormone Y induces flowering in mango and also promotes rapid internode/petiole elongation in deep water rice plants and hence helping leaves or upper part of shoot to remain above water. (ii) Hormone X promotes root growth and root hair formation. (iii) Hormone Z inhibits the seed germination, increases the tolerance of plant to various stresses, play important role in seed development, maturation and dormancy.

    A
    `Y-ABA, X-"Auxin", Z-GA`
    B
    `Y-C_(2)H_(4)X - "Auxin", Z - GA`
    C
    `Y-"Auxin", X-C_(2)H_(4),Z - GA`
    D
    `Y-C_(2)H_(4),X - C_(2)H_(4),Z - ABA`

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    I. "Y" hormone induces flowering in mango and also promotes rapid internode / petiole elongation in deep water rice plants and hence helping leaves or upper part of shoot above water. II. "X" hormone promotes root growth and root hairs formation III. "Z" hormone inhibits the seed germination, increases the tolerance of plant to various stresses, play important role in seed development, maturation and dormancy. Identify the correct names of hormones

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