1
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
For its action, nitrogenase requires
A
high input of energy
B
light
C
Mn2+
D
super oxygen radicals.
2
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Read the following four statements (A $$-$$ D). phosphorylation involve uphill transport of protons across the membrane.
(A)  Both photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane.
(B)  In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth.
(C)  Stamens in flowers of Gloriosa and Petunia are polyandrous.
(D)  Symbiotic nitrogen fixers occur in free-living state also in soil.

How many of the above statements are right?
A
Two
B
Three
C
Four
D
One
3
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Through their effects on plant growth regulators, what do the temperature and light control in the plants?
A
Apical dominance
B
flowering
C
Closure of stomata
D
Fruit elongation
4
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Vernalization simulates flowering in
A
zamikand
B
turmeric
C
carrot
D
ginger.
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12