Carbon dioxide joins the photosynthetic pathway in
PS-1
PS-II
light reaction
dark reaction
The carbon dioxide acceptor in Calvin Cycle/C3 plants is
phosphoenol pyruvate (PEP)
ribulose 1,5-diphosphate (RuDP)
phosphoglyceric Acid (PGA)
ribulose Monophosphate (RMP)
C4-cycle was discovered by
Hatch and Slack
Calvin
Hill
Arnon
During monsoon, the rice crop of Eastern states of India shows lesser yield due to limiting factor of
CO2
light
temperature
water
In sugarcane plant14Co2 is fixed in malic acid, in which the enzyme that fixes CO2 is
fructose phosphatase
ribulose biphosphate carboxylase
phosphoenol pyruvic acid carboxylase
ribulose phosphate kinase
Protochlorophyll differs from chlorophyll in lacking
2 hydrogen atoms in one of its pyrrole rings
2 hydrogen atoms in two of its pyrrole rings
4 hydrogen atoms in one of its pyrrole rings
4 hydrogen atoms in two of its pyrrole rings
Plants adapted to low high intensity have
larger photosynthetic unit size than the sun plants
higher rate of CO2 fixation than the sun plants
more extended root system
leaves modified to spines
Which one of the following statements about cytochrome P450 is wrong?
It contains iron
It is an enzyme involved in oxidation reactions
It is a coloured cell
It has an important role in metabolism
Which one occurs both during cyclic and non-cyclic modes of photophosphorylation?
Involvement of both PS-1 and PS-II
Formation of ATP
Release of O2
Formation of NADPH
Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants?
Violet and blue
Blue and green
Green and red
Red and violet
