Photosynthesis in Higher Plants
Previous Years Questions

MCQ (Single Correct Answer)

When one CO2 molecule is fixed as one molecule of triose phosphate, which of the following photochemically made, high energy chemical intermediates ar...
Identify the correct statements regarding chemiosmotic hypothesis: (a) Splitting of the water molecule takes place on the inner side of the membrane. ...
Given below are two statements: Statement I : The primary CO2 acceptor in C4 plants is phosphoenolpyruvate and is found in the mesophyll cells. Statem...
Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:
The first stable product of CO2 fixation in Sorghum is
Which of the following statements is incorrect?
In light reaction, plastoquinone facilitates the transfer of electrons from
The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of
Which of the following is not a product of light reaction of photosynthesis?
With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?
Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in
The process which makes major difference between C3 and C4 plants is
Emerson's enhancement effect and Red drop have been instrumental in the discovery of
In a chloroplast the highest number of protons are found in
Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant duri...
Water soluble pigments found in plant cell vacuoles are
A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and ...
Chromatophores take part in
In photosynthesis, the light-independent reactions take place at
Read the following four statements (A $$-$$ D). phosphorylation involve uphill transport of protons across the membrane. (A)  Both photopho...
A process that makes important difference between C3 and C4 plants is
The correct sequence of cell organelles during photores piration is
In kranz anatomy, the bundle sheath cells have
Which one of the following is essential for photolysis of water?
CAM helps the plants in
Read the following four statements, (i), (ii), (iii) and (iv) and select the right opening having both correct statement. Statements : (i)  ...
Kranz anatomy is one of the characteristics of the leaves of
Study the pathway given below: In which of the following options correct words for all the three blanks A, B and C are indicated?...
PGA as the first CO2 fixation product was discovered in photosynthesis of
C4 plants are more efficient in photosynthesis than C3 plants due to
Cyclic photophosphorylation results in the formation of
Stroma in the chloroplasts of higher plant contains
Electrons from excited chlorophyll molecule of photosystem II are accepted first by
In leaves of C4 plants malic acid synthesis during CO2 fixation occurs in
The C4 plants are photosynthetically more efficient than C3 plants because
The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is
In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of
During photorespiration, the oxygen consuming reaction(s) occur in
In photosystem I, the first electron acceptor is
As compared to a C3-plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C4-plants?...
Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because
Photosynthetic Active Radiation (PAR) has the following range of wavelengths.
In C3 plants, the first stable product of photosynthesis during the dark reaction is
Plants adapted to low light intensity have
Which element is located at the centre of the porphyrin ring in chlorophyll?
In sugarcane plant 14CO2 is fixed to malic acid, in which the enzyme that fixes CO2 is
Stomata of CAM plants
Which one of the following is wrong in relation to photorespiration?
Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants?
Which one of the following concerns photophosphorylation?
Which of the following absorb light energy for photosynthesis?
In photosynthersis energy from light reaction to dark reaction is transferred in the form of
Which pigment absorbs the red and far-red light?
What is true for photolithotrophs?
Which pigment system is inactivated in red drop?
Which pair is wrong?
For assimilation of one CO2 molecule, the enerrgy required in from of ATP and NADPH2 are
For the synthesis of one glucose molecule the Calvin cycle operates for
Which is the first CO2 acceptor enzyme in C4 plants?
The first step for initiation of photosynthesis will be
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