1
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Cell elongation in internodal regions of the green plants takes place due to
A
indole acetic acid
B
cytokinins
C
gibberellins
D
ethylene.
2
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
One set of the plant was grown at 12 hours day and 12 hours night period cycles and it flowered while in the other set night phase was interrupted by flash of light and it did not produce flower. Under which one of the following categories will you place this plant?
A
Long day
B
Darkness neutral
C
Day neutral
D
Short day
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone
A
auxin
B
cytokinin
C
ethylene
D
abscisic acid.
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Differentiation of shoot is controlled by
A
high auxin : cytokinin ratio
B
high cytokinin : auxin ratio
C
high gibberellin : auxin ration
D
high gibberellin : cytokinin ratio.
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