16109.Dark reaction requires light reaction for
carboxylation of RUBP
regeneration of RUBP
reduction of PGA
formation of hexose sugar
Explanation:
Product of dark reaction is NADPH2 required for reduction of PGA to PGAL
Product of dark reaction is NADPH2 required for reduction of PGA to PGAL
16110.Emerson effect proves
concept of two photosystem in plant
photophosphorylation
photorespiration
there are light and dark reaction in photosynthesis
Explanation:
The concept of two photosystem in plant was proposed by emerson bases on red drop effect and enhancement effect.
The concept of two photosystem in plant was proposed by emerson bases on red drop effect and enhancement effect.
16111.Photosynthetic pigments in chloroplast are embedded in membrane of
Thylakoids
Photoglobin
Matrix
Envelopeof chloroplast
16112.Name a plant which do not perform photosynthesis is
Algae
Bryophyllum
cuscutta
Pitcher plant
Explanation:
Cuscutta is a parasite.
Cuscutta is a parasite.
16113.Grana refer to
Stacks of thylakoids in plastids of higher plants
A constant in quantum equation
Glycolysis of glucose
By-product of photosynthesis
16114.Light reaction of photosynthesis results in formation of ______.
O2
NADPH + H+
ATP
All of these
Explanation:
During light phase ATP and NADPH is product where as oxygen is byproduct produced during light phase.
During light phase ATP and NADPH is product where as oxygen is byproduct produced during light phase.
16115.The ionized chl. a+
Receives low energy electron
Receives high energy electron
Expels low energy electron
Expels high energy electron
16116.In Calvin cycle,
fructose 1,6 diphophate undergoes dephosphorylation.
ATP is formed during dephosphoylation of fructose
1,3 di PGA undergo phosphorylation
none of these
16117.What will happen to the rate of photosynthesis if sodium bicarbonate is added in the water having hydrilla plant in a beaker
It will remain normal
It will be decreased
It will be stopped
It will be accelerated
16119.Which of the following gas would disappear from the atmosphere if all the photosynthetic activities were to stop?
Nitrogen
Carbondioxide
Hydrogen
Oxygen
16120.Photo-oxidation of chlorophyll and cell contents as a result of high light intensity is known as
Solarization
Photolysis
Photperiodism
Photorespiration
16121.Temperature is very high but a plant is showing photosynthesis with normal rate, probably it would be
C3 plant
Mango plant
Pea plant
Sugarcane plant
16122.For the process of photosynthesis all except one of the following items are essential. Point out the exception
CO2, optimum temperature
Glucose and oxygen
Water and minerals
Light and chlorophyll
16123.The prerequisities of Calvins cycle are
H2O, CO2, ATP
ATP, H2O, NADPH2
CO2, ATP, NADPH2
NADPH2, H2O, CO2
16124.In the calvin cycle, the assimilatory power is used during
Formation of PGA
Conversion of PGA to PGAL
Formation of fructose 1-6 diphsophate from PGAL
Formation of glucose from fructose – di- phosphate
16125.Unidirectional flow of e- in non-cyclic photophosphorylation is
PS II $^{\underrightarrow{e^-}}$ PS I $^{\underrightarrow{e^-}}$ NADP $^{\underrightarrow{e^-}}$ water
Water $^{\underrightarrow{e^-}}$ PSII $^{\underrightarrow{e^-}}$ PS I $^{\underrightarrow{e^-}}$ NADP
PS I $^{\underrightarrow{e^-}}$ NADP $^{\underrightarrow{e^-}}$ water $^{\underrightarrow{e^-}}$ PS II
Water $^{\underrightarrow{e^-}}$ PS I $^{\underrightarrow{e^-}}$ PS II $^{\underrightarrow{e^-}}$ NADP
16126.In CAM plants, CO2 required for photosynthesis enters the plant body during
Daytime through the lenticels
Night when the hydathodes are open
Daytime when the stomata are open
Night through the stomata which are kept open
16128.Reduction of co-enzyme NADP depends on
Reduction of CO2
Evolution of O2
Photolysis of water
Formation of ATP
16130.Calvin's cycle involves
Oxidative phosphorylation
Oxidative carboxylation
Reductive carboxylation
Reductive phophorylation
16131.In non-cyclic photophosphorylation, all the participants acts as electron donor and acceptor except
Chl-a of PS I
Chl-a of PS II
NADP
Both 1 and 2
16133.Chemical which absorbs light energy and changes it to chemical energy is
Chlorophyll a
Chlorophyll b
Xanthophyll
Carotene
16134.Chlorophyll is present
On the surface of chloroplast
In the stroma of chloroplast
In the grana of chloroplast
Dispersed throughout the chloroplast
16135.Which of the following protist is a photoautotroph
Thiobacillus
Ferrobacillus
Diatoms
Chlorobium
16136.What happens during light reaction
CO2 reacts with H2
Synthesis of PGAL
Lysis of water molecule
CO2 combines with H2O
16137.Chlorophyll-a differes from chlorophyll-b in having
Methly group instead of aldehyde group
Aldehyde group instead of methyl group
Methyl group instead of ethyl group
Only phytol tail instead of head
16138.In non-cyclic photophosphorylation
ATP is generated
Both PSI and PSII are involved
Electron flow is unidirectional
All the above
16139.During photosynthesis the reaction when PGA is converted into PGAL, is called
Isomerization
Reduction
Oxidation
Phosphorylation
16141.In con-cyclic photophosphorylation, the electron emitted by P680 is replaced by electron from
NADP
Water
Ferridoxin
Chlorophyll-a
16143.In C4 plants, synthesis of glucose occurs in
Spongy cells
Bundle sheath cells
Mesophyll cells
Palisade cells
16144.In cyclic and non-cyclic photophosphorylation, the first acceptor of electron are
Plastoquinone and ferridoxin
Cyt b6 and cyt. f
Ferridoxin in both
Ferridoxin and plastoquinone respt.
16145.Primary and secondary processes of Photosynthesis takes place in ______ and ______ respectively.
Stroma and grana
Stroma and lamellae
Thylakoid and quantasome
Grana and stroma
16146.Which of the following substances yield less than 4 Kcal/mol when its phosphate bond is hydrolyzed?
Creatine Phosphate
ADP
Glucose-6-Phosphate
ATP
16147.Which one occurs during both cyclic and non-cyclic photophosphorylation
Formation of ATP
Release of O2
Formation of NADPH2
Involvement of both PSI and PSII
16148.The prerequisities of Calvins cycle are
H2O, CO2, ATP
ATP, H2O, NADPH2
CO2, ATP, NADPH2
NADPH2, H2O, CO2
16149.Net yield of aerobic respiration during Kreb's cycle per glucose molecule is
2 ATP molecules
8 ATP molecules
36 ATP molecules
38 ATP molecules
16150.The photochemical process in photosynthesis which needs both PSI and PSII also involves
Photolysis of water
Z-scheme of electron transfer
Synthesis of assimilatory power
All of these
16151.For synthesis of one molecule of glucose, the requirement of ATP and NADPH2 is respectively
15 and 10
12 and 8
30 and 15
18 and 12
16152.Which of the following element is needed for chlorophyll biosynthesis?
Copper
Magnesium
Calcium
Chlorine
16153.In the calvin cycle, the assimilatory power is used during
Formation of 3-PGA
Conversion of 3-PGA to 3-PGAL
Formation of fructose -6 diphsophate from PGAL
Formation of glucose from fructose 1-6 diphosphate
16154.The two enzymes responsible for primary carboxylation in C3 and C4 pathway, respectively are
RUBP carboxylase and RUBP oxygenase
PEP carboxylase and RUBP carboxylase
RUBP carboxylase and PEP carboxylase
PEP carboxylase and pyruvate carboxylase
16155._______ are placed one above the other to form stack of coins
oxysomes
F1 particles
cristae
thylakoids
16156.During Photosynthesis
Both CO2 and water get oxidised
Both CO2 and water get reduced
Water is oxidised and CO2 is reduced
Water reduced and CO2 is oxidized
16157.Unidirectional flow of e- in non-cyclic photophosphorylation is
PS II $^\underrightarrow{{e^-}}$ PS I $^\underrightarrow{{e^-}}$ NADP $^\underrightarrow{{e^-}}$ water
Water $^\underrightarrow{{e^-}}$ PS II $^\underrightarrow{{e^-}}$ PS I $^\underrightarrow{{e^-}}$ NADP
PS I $^\underrightarrow{{e^-}}$ NADP $^\underrightarrow{{e^-}}$ water $^\underrightarrow{{e^-}}$ PS II
Water $^\underrightarrow{{e^-}}$ PS I $^\underrightarrow{{e^-}}$ PS II $^\underrightarrow{{e^-}}$ NADP
16158.ATP synthesis during light reaction is
Photophosphorylation
Photolysis
Oxidative phosphorylation
Phosphorylation