21
All are natural auxins except
Answer: NAA
Questions
23
Which of the following bioassays are used to detect the presence of auxin
Answer: Avena curvature test and Split pea stem curvature test
25
Which of the following auxin is widely used as a selective weedicide
Answer: 2,4,-D
27
Which of the following statement is incorrect?
Answer: Auxins are produced at the region of elongation
28
Which plant hormone helps in breaking the dormancy of plant?
Answer: Gibberellin
29
Which hormone is formed in leaves and helps in the blooming of the flowers?
Answer: Florigens
30
Name the plant hormone which increases the activity of cambium in the wooden plants?
Answer: Gibberellins
32
Name the amino acid which acts as a precursor of auxin biosynthesis?
Answer: Tryptophan
33
Mark the one, which is NOT a physiological effect of auxin?
Answer: Stem elongation
34
Gibberellin that is synthesized in the shoot transported to different parts of the plant by which medium?
Answer: Phloem
35
Which of the following plant hormone causes a delay in leaf senescence?
Answer: Cytokines
36
Deficiency in which of the following hormone causes dwarfism in the plant?
Answer: Brassinosteroid
