HORMONAL REGULATION AND PLANT DEVELOPMENT Question Preview (ID: 56469)
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Which of these is not a function of auxin?
a) inducing callus formation
b) inducing dormancy
c) enhancing cell division
d) maintaining apical dominance
This hormone is not a growth inhibitor
a) Dormin
b) Abscisic acid
c) Ethylene
d) IAA
Which of the following plant hormones is responsible for the growth and elongation of the plant?
a) abscisic acid
b) ethylene
c) auxin
d)
Which of the following plant hormones is responsible for inducing mitosis in root and stem cells?
a) abscisic acid
b) cytokinins
c) gibberellins
d)
Name the plant hormone which increases the activity of cambium in the wooden plants?
a) Gibberellins
b) Cytokinins
c) Auxins
d) Ethylene
Which of the following statement is incorrect?
a) Auxins are the most important plant hormone.
b) Auxins are produced at the region of elongation.
c) Indoleacetic Acid (IAA) is a principal auxin.
d) Auxins are also important in regulating the fall of leaves and fruits.
Gibberellin that is synthesized in the shoot transported to different parts of the plant by which medium?
a) xylem
b) Sieve tube
c) Aleurone layer
d) Phloem
Which of the following hormone is found in gaseous form?
a) Abscisic Acid
b) Ethylene
c) Auxin
d) Florigens
Which of the following plant hormone causes a delay in leaf senescence?
a) Abscisic acid
b) Auxin
c) Ethylene
d) Cytokines
A widely used rooting hormone is
a) 2,4,5 – T
b) Cytokinin
c) NAA
d) 2,4, -D
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