11th And 12th > Biology
PHOTOSYNTHESIS IN HIGHER PLANTS MCQs
Total Questions : 60
| Page 4 of 6 pages
Answer: Option B. ->
3-phosphoglycerate molecules
:
B
Photorespiration occurs when oxygen interferes with the Kelvin Cycle by causing RuBisCo to fix an O2 to RuBP instead of CO2.
:
B
Photorespiration occurs when oxygen interferes with the Kelvin Cycle by causing RuBisCo to fix an O2 to RuBP instead of CO2.
Answer: Option B. ->
production of NADPH molecules
:
B
The movement of electrons along the pathway helps in the reduction of NADP to NADPH after photolyisis of water.
:
B
The movement of electrons along the pathway helps in the reduction of NADP to NADPH after photolyisis of water.
Answer: Option D. ->
Chlorophyll
:
D
The chlorophyll molecules undergo photoexcitation and release their electrons.
:
D
The chlorophyll molecules undergo photoexcitation and release their electrons.
Answer: Option C. ->
Bacteria congregated in these areas because these areas had the most oxygen being released.
:
C
Engelmann used oxygen loving bacteria to grow on the algae. The bacteria congregating in the region of the red and blue light indicated that there was more oxygen being produced in these areas, indicating there was more photosynthetic activity in these areas. Thus Engelmann concluded that the red and blue light of the visible spectrum generate more photosynthetic activity than other parts of the visible spectrum.
:
C
Engelmann used oxygen loving bacteria to grow on the algae. The bacteria congregating in the region of the red and blue light indicated that there was more oxygen being produced in these areas, indicating there was more photosynthetic activity in these areas. Thus Engelmann concluded that the red and blue light of the visible spectrum generate more photosynthetic activity than other parts of the visible spectrum.
Answer: Option A. ->
light, chemical
:
A
During photosynthesis the energy trapped in light is converted into chemical energy like ATP and glucose.
:
A
During photosynthesis the energy trapped in light is converted into chemical energy like ATP and glucose.
Answer: Option B. ->
non-cyclic electron pathway
:
B
This is the photlysis of water taking plave during the non0cyclic photophosphorylation.
:
B
This is the photlysis of water taking plave during the non0cyclic photophosphorylation.
Answer: Option B. ->
Mesophyll cells
:
B
:
B
In C4 plants, the Hatch and Slack pathway involves two carboxylation reaction, one taking place in chloroplast of mesophyll cells and other in chloroplast of bundle – sheath cells. In mesophyll cells, phosphoenol pyruvate (PEP) is carboxylated to oxaloacetate (OAA) which is then reduced to malic acid.
Answer: Option B. ->
light-independent
:
B
The energy generated during the light reactions is used to produce NADPH and ATP, which are used in the dark reactions for the fixation of the CO2 to a carbohydrate.
:
B
The energy generated during the light reactions is used to produce NADPH and ATP, which are used in the dark reactions for the fixation of the CO2 to a carbohydrate.
Answer: Option C. ->
30
:
C
:
C
Glucose is a hexose sugar. It’s one molecule contains six carbon atoms. As Calvin cycle takes in only one carbon (as CO2) at a time, six turns of this cycle will be required to produce one molecule of glucose (6C).
Answer: Option A. ->
True
:
A
CO2 fixation is a part of the Calvin cycle, which occurs in the stroma of the chloroplasts.
:
A
CO2 fixation is a part of the Calvin cycle, which occurs in the stroma of the chloroplasts.
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