a) fructose 1,6 diphophate undergoes dephosphorylation.
50%
b) ATP is formed during dephosphoylation of fructose
0%
c) 1,3 di PGA undergo phosphorylation
50%
d) none of these
Q.2.
In C4 plants, carboxylation is twice, it can be represented as
0%
a) Pyruvic acid + CO2 and malic acid + CO2
100%
b) RuBP + CO2 and pyruvic acid + CO2
0%
c) PEPA + CO2 and RuBP + CO2
0%
d) PEPA + CO2 and malic acid + CO2
Q.3.
The two enzymes responsible for primary carboxylation in C3 and C4 pathway, respectively are
0%
a) RuBP carboxylase and RuBP oxygenase
100%
b) PEP carboxylase and RuBP carboxylase
0%
c) RuBP carboxylase and PEP carboxylase
0%
d) PEP carboxylase and pyruvate carboxylase
Q.4.
Erythrose monophosphate (4C) is formed during
0%
a) CAM pathway
0%
b) C4 pathway
100%
c) Conversion of fructose to glucose
0%
d) Regeneration of RuBP
Q.5.
____ ions help in photolysis of water.
100%
a) Mn++
0%
b) Mg++
0%
c) Cl-
0%
d) both (a) and (c)
Q.6.
Solarisation refers to ______.
0%
a) formation of sugar with help of water and energy
100%
b) destruction of chlorophyll
0%
c) synthesis of chl.
0%
d) both b and c
Q.7.
Photo-oxidation of chlorophyll and cell contents as a result of high light intensity is known as
100%
a) Solarization
0%
b) Photolysis
0%
c) Photperiodism
0%
d) Photorespiration
Q.8.
Ribbon shaped chloroplast is present in
0%
a) Zygnema
0%
b) Spirogyra
100%
c) Chlorobium
0%
d) Chromatinum
Q.9.
The head and tail of chlorophyll are made up of
0%
a) Pyrrole and tetrapyrrole
0%
b) Porphyrine and phyrin
0%
c) Pophyrine and phytol
100%
d) Tetrapyrrole and magnesium
Q.10.
Who is that scientist who gave the Law of limiting factors ?
0%
a) Blackman
0%
b) Hill
0%
c) Liebig
100%
d) Von Mohi
Q.11.
One of the following is electron donor to P680 during light reactions of photosynthesis.
0%
a) NADPH
100%
b) Phytochrome
0%
c) Chiorophyll
0%
d) Water
Q.12.
The fixation and reduction of CO2 occur in preence of
0%
a) ATP
0%
b) ATP and NADPH
0%
c) NADPH, chlorophyll and water
100%
d) ATP, NADPH and light
Q.13.
Light reaction of photosynthesis results in formation of ______.
0%
a) O2
0%
b) NADPH + H+
100%
c) ATP
0%
d) All of these
Q.14.
Which of the following connect the primary and secondary processes of photosynthesis?
100%
a) NADPH2
0%
b) ATP and NADPH2
0%
c) ATP
0%
d) Ferridoxins
Q.15.
In C3 pathway, out of 12 molecules of 3-PGAL, how many are used for regeneration of RuBP?
0%
a) 12
0%
b) 8
0%
c) 10
100%
d) 6
Q.16.
The source of CO2 during calvin cycle in C4 plant is
0%
a) Malic acid
0%
b) OAA
100%
c) PEP
0%
d) RuBP
Q.17.
The enzyme pair common to C3 plants and EMP is
0%
a) cytochrome oxidase and enolase
0%
b) aldolase and triose phosphate isomerase
0%
c) aldolase and enolase
0%
d) phosphoglyceromutase and triose phosphate isomerase
Q.18.
The chemical structure of chlorophyll ‘a’ varies from chlorophyll ‘b’ due to difference between.
0%
a) CH3 and C2H5
0%
b) CH3 and CH2 = CH2
0%
c) CH3 and CHO
0%
d) CHO and CH2 = CH2
Q.19.
Choose the correct statement.
0%
a) The C4 plants do not have Rubisco.
0%
b) Carboxylation of RuBP leads to the formation of PGA and phosphoglycolate.
0%
c) Decarboxylation of C4 acids occurs in the mesophyll cells.
0%
d) In CAM plants Calvin’s cycle reactions occur during night.
Q.20.
Quinones are
0%
a) mobile electron carriers
0%
b) enzymes of oxidative phosphorylation
0%
c) enzymes of krebs cycle
0%
d) none of the above
Q.21.
One photon is blue light contains....kcal and of red light....kcal
0%
a) 70 ; 40
0%
b) 220 ; 70
0%
c) 10 ; 90
0%
d) 90 ; 10
Q.22.
The inhibiting effect of oxygen in C3 plants on photosynthesis is
0%
a) solarization
0%
b) photooxidation
0%
c) Warbug’s effect
0%
d) none above
Q.23.
A. Six turns of Calvin-cycle result in the production of one molecule of glucose (C6H12O6) R. Three molecules of ribulose 1, 5 – bisphosphate (Ru BP) react with three molecules of carbon dioxide to produce six carbon intermediates.
0%
a) A is correct and R is its explanation
0%
b) A is correct but R is not its explanation
0%
c) A is correct but R is wrong
0%
d) Both A and R are wrong
Q.24.
Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because :
0%
a) Four carbon acids are the primary initial CO2 fixation production.
0%
b) The primary fixation of CO2 is mediated via PEP carboxalase.
0%
c) Effective pumping of CO2 into bundlesheath cells.
0%
d) Rubisco in C4 plants has higher affinity for CO2.
Q.25.
A. Photosynthestically C4 plants are less efficient then C3 plants. R. The operaion of C4 pathway requires the involvement of only bundle-sheath cells.
0%
a) If Assertion (A) and reason (R) both are correct and R is explanation to A.
0%
b) If (A) and (R) both are correct but (R) is not an explanation to A.
0%
c) If A is true but R is false.
0%
d) If both A and R are false.
Q.26.
In C4 plants, the primary CO2 acceptor is
0%
a) 3 - PGA
0%
b) Oxalo acetic acid
0%
c) RuBP
0%
d) PEP
Q.27.
Which of the following plant is efficient converter of solar energy whose net productivity 2-4 kg/m2/yr or even higher.
0%
a) Wheat
0%
b) rice
0%
c) sugarcane
0%
d) bajra
Q.28.
Chlorophyll a is absent in which of the following photosynthesising organisms ?
0%
a) Bacteria
0%
b) Cyanobacteria
0%
c) Red algae
0%
d) Brown algae
Q.29.
For the process of photosynthesis all except one of the following items are essential. Point out the exception
0%
a) CO2, optimum temperature
0%
b) Glucose and oxygen
0%
c) Water and minerals
0%
d) Light and chlorophyll
Q.30.
Which of the following pigments contains open pyrolle ring?
0%
a) Phycobilins
0%
b) Xanthophylls
0%
c) Chlorophylls
0%
d) α-carotene
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