In a chloroplast the highest number of protons are found in
1. lumen of thylakoids
2. inter membrane space
3. antenna complex
4. Stroma
In photosynthesis, the light-independent reactions take place at
1. thylakoid lumen
2. photosystem l
3. photosystem ll
4. stromal matrix
PGA as the first CO2 fixation was discovered in the photosynthesis of
(1) bryophyte
(2) gymnosperm
(3) angiosperm
(4) algae
Cyclic-photophosphorylation results in the formation of
1. NADPH
2. ATP and NADPH
3. ATP, NADPH and O2
4. ATP
The C4 plants grow very efficiently in warm climates because they
(1) consume fewer ATP molecules for glucose synthesis
(2) minimize photorespiratory losses
(3) have more efficient chloroplasts
(3) contain enzymes which are not inactivated at high temperatures.
Production of NADPH in a chloroplast takes place during
1. cyclic photophosphorylation
2. non-cyclic photophosphorylation
3. series photophosphorylation
4. substrate level photophosphorylation.
Blackman's law is related to
(1) respiration
(2) transpiration
(3) root pressure
(4) photosynthesis.
Which of the following statements is correct?
1. | Photorespiration is useful process. |
2. | C4 plants are more efficient than C3 plants. |
3. | C4 plants are less efficient than C3 plants. |
4. | Photorespiration is absent in C3 plants but present in C4 plants. |
Photorespiration shows formation of
1. sugar but not ATP
2. ATP but not sugar
3. both ATP and sugar
4. neither ATP nor sugar.
C4 plants have better productivity because
(1) C4 plants absorb more light
(2) C4 plants absorb more CO2
(3) C4 plants does not carry photorespiration
(4) C4 plants have more amount of RuBisCO.