16210.CO2 acceptor in C3 plants is
Xylulose-5-phosphate
3-phosphoglyceric acid
Ribulose 1, 5 diphosphate
Phoshoenol pyruvic acid
16211.Constituents of pigment system I are located on
Granal thylakoids
Stromal thylakoids
Outer surface of granal and stromal thylakoids
Stroma
16213.The source of CO2 during calvin cycle in C4 plant is
Malic acid
OAA
PEP
RuDP
Explanation:
During C4 pathway malic acid undergo decarboxylaton to release CO2.
During C4 pathway malic acid undergo decarboxylaton to release CO2.
16216.During dark reaction the three carbon atoms of 3-PGA are derived from
RuBP only
CO2 only
RuBP + CO2
RuBP + CO2 + PEP
16217.During daylight hours, the rate of photosynthesis is higher than that of respiration, and the ratio of oxygen produced to that of consumed is
1 : 1
10 : 1
50 : 1
5 : 1
16218.During photosynthesis when PGA is changed into phosphogycleraldehyde, which of the following reactions occurs?
Oxidation
Reduction
Electrolysis
Hydrolysis
16219.Enzymes PEP carboxylase and RuBP caboxylase are located in chloroplasts of
C3 plants
CAM plants
C4 plants
both 2 and 3
16220.RuBisCO stands for
Ribulose phosphate carboxylic oxygenase
Ribulose phosphate carboxylase oxygenase
Ribulose bisphosphate carboxylase oxygenase
None of the above
16222.For photosynthesis (i.e. for the synthesis of organic matter), the green plants need only
Light
Chlorophyll
CO2
All of these
16223.Formation of ATP in photosynthesis and respiration is an oxidation process which utilizes the energy from
Cytochromes
Ferredoxin
Electrons
Carbon dioxide
16224.Greatest producers of organic matter are
Crop plants
Forests
Plants of the land area
Phytoplankton of oceans
16225.The malic acid in bundle sheath chloroplast of C4 plants is decarboxylated to form
OAA
Pyruvic acid
PEPA
Aspartic acid
16228.In a electron transport chain in terminal oxidation the cytochrome which donates electrons to O2 is
Cytochrome b
Cytochrome c
Cytochrome a3
Cytochrome a
16230.In blue-green algae photosystem-II contain an important pigment concerned with photolysis of water it is called
B carotene
Chlorophyll b
Cytochrome c
Phycocyanin
16231.In C3 plants first stable product of photosynthesis during dark reactions is
PGA
PGAL
RuBP
Oxalo acetic acid
16232.In C4 plants, Calvin cycle operates in
Stroma of bundle sheath chloroplasts
Grana of Bundle sheath chloroplasts
Grana of mesophyll chloroplasts
Stroma od mesophyll chloraplasts
16233.In C4 plants, initial carbondioxide fixation occurs on chloroplasts of
Palisade tissue
Spongy parnchyma
Guard cells
Hypodermis and chlorenchyma
16234.Action spectrum is
A graph showing amount of light absorbed
A graph showing rate of photosynthesis
A graph showing absorption of light
A graph showing amount of CO2 released
16235.In C4 plants, synthesis of sugars/ final CO2 fixation occurs in
Palisade cells
Spongy cells
Undifferentiated mesophyll cells
Bundle sheath cells
16236.In case of C4 pathway
CO2 combines with PGA
CO2 combines with PEP
CO2 first combines with RuBP
CO2 combines with RMP
16237.In chlorophyll a, third carbon of second pyroll ring is attached with
Carboxyl group
Magnesium
Methyl group
Aldehyde group
16239.In photosynthesis, oxygen is liberated due to
Reduction of carbon dioxide
Hydrolysis os carbohydrate
Photolysis of water
Breakdown of chlorophyll
16240.In which of the following the rate of photosynthesis is decreased and is known as red drop
Blue light
Green light
Red light more than 680 nm
Red light less than 680 nm
16241.Intact chloroplast from green leaves cab be isolated by
Acetone
Ethanol
Alcohol
Sugar solution
16242.In which of the following light, rate of photosynthesis is maximum?
white
discontinuous white
red
blue
Explanation:
Discontinuous white light or intermittent light don't increase the temperature, hence the rate of photosynthesis is maximum.
Discontinuous white light or intermittent light don't increase the temperature, hence the rate of photosynthesis is maximum.
16244.Isotopes popularly known to have been used in the study of photosynthesis are
C14 and O18
C11 and C32
C16 and N15
P32 and C15
16245.Light energy is conveted into chemical energy in the presence of
Pyrenoids
Chloroplasts
Ribosomes
Mesosomes
16246.Light is necessary during photosynthesis for
Evolution of hydrogen
Photolysis of water
Heating
Breakdown of chlorophyll
16247.Make suitable pair
(A) Emerson effect - (a) C4 cycle
(B) Hill reaction - (b) Photolysis
(C) Calvin's cycle - (c) C3 cycle
(D) Hatch and Slack cycle - (d) Photosystem-I & II
(A) Emerson effect - (a) C4 cycle
(B) Hill reaction - (b) Photolysis
(C) Calvin's cycle - (c) C3 cycle
(D) Hatch and Slack cycle - (d) Photosystem-I & II
Aa, Bb, Cc, Dd
Aa, Bc, Cd, Da
Ac, Bd, Ca, Db
Ad, Bb, Cc, Da
16248.Which of the following connet the primary and secondary processes of photosynthesis?
NADPH2
ATP and NADPH2
ATP
Ferridoxins
16251.Nine-tenth of all photosynthesis of world (85-90%) is carried out by
Large trees with millions of branches and levess
Algae of the ocean
Chlorophyll containing ferns of the forest
Scientist in the laboratories
16252.Nobel prize was awarded to the scientist for discovering the pathway of carbon assimilation
Watson
Krebs
Calvin
Parnas
16254.During photorespiration, the conversion of phosphoglycolate to glycolate takes place in this cell organelle
Peroxisome
Glyoxysome
Mitochondria
Chloroplast
16256.Oxidative phosphorylation occurs during the process of
Protein synthesis
N2 fixation
Respiration
Transpiration
16257.Phytol tail is present at
3rd carbon of IInd ring
2nd carbon of IIIrd ring
7th carbon of IVth ring
3rd carbon of IVth ring