1
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.
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Nicotiana sylvestris flowers only during long days and N.tabacum flowers only during short days. If raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offspring. What is the best reason for considering N.sylvestris and N.tabacum to be separate species?
A
They cannot interbreed in nature
B
They are reproductively distinct
C
They are physiologically distinct
D
They are morphologically distinct
3
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.
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Coconut milk factor is
A
abscisic acid
B
an auxin
C
a gibberellin
D
cytokinin
NEET Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12