A. Gibberellins
B. Cytokinins
C. Auxins
D. Abscisic Acid
Show AnswerAnswer = Option A
Coordination and Control
The only promoter of leaf senescence in the following plant hormones is:
A. Gibberellins
B. Cytokinins
C. Auxins
D. Abscisic Acid
Show AnswerAnswer = Option D
Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering:
A. Gibberellins
B. Cytokinins
C. Auxins
D. Ethene.
Show AnswerAnswer = Option A
Which of the following is antagonist to Auxin in terms of promotion of stem growth?
A. Gibberellins
B. Cytokinins
C. Abscisic Acid
D. none of these.
Show AnswerAnswer = Option C
Gibberellins may be substituted for _____ light, therefore promote flowering in long day plants.
A. White
B. Red
C. Blue
D. Green
Show AnswerAnswer = Option B
Chemically auxins are
A. Indole propionic acid.
B. Indole carboxylic acid.
C. Indole acetaldehyde
D. Indole acetic acid.
Show AnswerAnswer = Option D
Chlorosis, i.e., yellowish hue on the leaves results from
A. Accumulation of toxic waste products in leaves.
B. Deficiency of chlorophyll.
C. Short supplies of mineral nutrients in the soil.
D. All of these
Show AnswerAnswer = Option D