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Photosynthesis In Higher Plants

210 Questions Start Allen Test
All Exams Allen Errorless
Q101 Allen 5. PYQ MCQ
The first stable product of $\mathsf { C O } _ { 2 }$ fixation in sorghum is :
A.
Pyruvic acid
B.
Oxaloacetic acid
C.
Succinic acid
D.
Phosphoglyceric acid
Q102 Allen 5. PYQ MCQ
Which of the following statements is incorrect?
A.
Both ATP and NADPH + Hāŗ are synthesizedduringnon-cyclic photophosphorylation.
B.
Stroma lamellae have PS-I only and lack NADP reductase.
C.
Grana lamellae have both PS-I and PS-II.
D.
Cyclic photophosphorylation involves both PS-I and PS-II.
Q103 Allen 5. PYQ MCQ
In the plastid, the site of dark and light reaction is :-
A.
Grana and stroma respectively
B.
Grana and matrix respectively
C.
Matrix and grana respectively
D.
Stroma and grana respectively
Q104 Allen 5. PYQ MCQ
The maximum absorption of light by chlorophyll occurs in which region of the absorption spectrum.
A.
Red and green
B.
Yellow and green
C.
Blue and red
D.
Brown and red
Q105 Allen 5. PYQ MCQ
Non-cyclic photophosphorylation results in the formation of
A.
ATP and NADH + H+
B.
ATP only
C.
ATP and NADPH + Hāŗ
D.
ATP, ADP and NADH + Hāŗ
Q106 Allen 5. PYQ MCQ
Given below are two statements : Statement I: The primary COā‚‚ acceptor in C4 plants is phosphoenolpyruvate and is found in the mesophyll cells. Statement Il: Mesophyll cells of C4 plants lack RuBisCO enzyme. In the light of the above statements, choose the correct answer from the options given below :-
A.
Both Statement I and Statement Il are incorrect.
B.
Statement I is correct but Statement Il is incorrect.
C.
Statement I is incorrect but Statement II is correct.
D.
Both Statement I and Statement Il are correct.
Q107 Allen 5. PYQ MCQ
Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves :-
A.
Breakdown of electron gradient.
B.
Movement of protons across the membrane to the stroma.
C.
Reduction of NADP to NADPHā‚‚ on the stroma side of the membrane.
D.
Breakdown of proton gradient.
Q108 Allen 5. PYQ MCQ
What is the role of large bundle sheath cells found around the vascular bundles in $\mathsf { C } _ { 4 }$ plants?
A.
To increase the number of chloroplasts for the operation of Calvin cycle.
B.
To enable the plant to tolerate high temperature.
C.
To protect the vascular tissue from high light intensity.
D.
To provide the site for photorespiratory pathway.
Q109 Allen 5. PYQ MCQ
When one COā‚‚ molecule is fixed as one molecule of triose phosphate, which of the following photochemically made, high energy chemical intermediates are used in the reduction phase?
A.
1 ATP + 1 NADPH
B.
1 ATP + 2 NADPH
C.
2 ATP + 1 NADPH
D.
2 ATP + 2 NADPH
Q110 Allen 5. PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(a)porins
(b)leg haemoglobin
(c)H+ accumulation
(d)Respiration mitochondria
(i)Pink coloured nodules
(ii)Lumen of thylakoid
(iii)Amphibolic pathway
(iv)Huge pores in outer membrane of
A.
aāˆ’ii, bāˆ’i, cāˆ’iv, d-iii
B.
aāˆ’iv, bāˆ’i, cāˆ’ii, dāˆ’iii
C.
aāˆ’iii,bāˆ’iv,cāˆ’ii,dāˆ’i
D.
aāˆ’ii, bāˆ’iv, cāˆ’i, dāˆ’iii
Q111 Allen 5. PYQ MCQ
Identify the correct statements regarding chemiosmotic hypothesis :
(a) Splitting of the water molecule takes place on the inner side of the membrane.
(b) Protons accumulate within the lumen of the thylakoids.
(c) Primary acceptor of electron transfers the electrons to an electron carrier.
(d) NADP reductase enzyme is located on the stroma side of the membrane.
(e) Protons increase in number in stroma.
A.
(a),(b) and (e)
B.
(a), (b) and (d)
C.
(b), (c) and (d)
D.
(b), (c) and (e)
Q112 Allen 5. PYQ MCQ
How many ATP and NADPHā‚‚ are required for the synthesis of one molecule of Glucose during Calvin cycle ?
A.
18 ATP and 12 NADPHā‚‚
B.
12 ATP and 16 NADPHā‚‚
C.
18 ATP and 16 NADPHā‚‚
D.
12 ATP and 12 NADPHā‚‚
Q113 Allen 5. PYQ MCQ
Which micronutrient is required for splitting of water molecule during photosynthesis ?
A.
Molybdenum
B.
Magnesium
C.
Copper
D.
Manganese
Q114 Allen 5. PYQ MCQ
The reaction centre in PS-II has an absorption maxima at :-
A.
700 nm
B.
660 nm
C.
780 nm
D.
680 nm
Q115 Allen 5. PYQ MCQ
Which of the following combinations is required for chemiosmosis?
A.
membrane, proton pump, proton gradient, NADP synthase
B.
proton pump, electron gradient, ATP synthase
C.
proton pump, electron gradient, NADP synthase
D.
membrane, proton pump, proton gradient, ATP synthase
Q116 Allen 5. PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(a)chlorophyll a
(b)chlorophyll b
(c)xanthophyll
(d)carotenoid
(i)yellow to yellow
(ii)yellow green
(iii)blue green
(iv)yellow
A.
a-iv, b-ii,c-iii,d-i
B.
a-iv, b-i, c-iii,d-ii
C.
a-ii, b-iii,c-i, d-iv
D.
a-i, b-iv, c-ii, d-iii
Q117 Allen 5. PYQ MCQ
Given below are two statements. Statement I: RuBisCO is the most abundant enzyme in the world. Statement II : Photorespiration does not occur in Cā‚„ plants. In the light of the above statements, choose the most appropriate answer from the options given below :-
A.
Statement I is correct but Statement Il is incorrect.
B.
Statement I is incorrect but Statement II is correct.
C.
Both Statement I and Statement Il are correct.
D.
Both Statement I and Statement Il are incorrect.
Q118 Allen 5. PYQ MCQ
Which out of the following statements is incorrect ?
A.
Grana lamellae have both PS-I and PS-II
B.
Cyclic photophosphorylation involves both PS-I and PS-II
C.
Both ATP and NADPH + Hāŗ are synthesisedduring non-cyclic photophosphorylation.
D.
Stroma lamellae lack PS-II and NADP reductase
Q119 Allen 5. PYQ MCQ
Which of the following are required for the dark reaction of photosynthesis? A. Light B. Chlorophyll C. COā‚‚ D. ATP Choose the correct answers from the options given below :-
A.
A, B and C only
B.
B, C and D only
C.
C, D and E only
D.
D and E only
Q120 Allen 5. PYQ MCQ
How many molecules of ATP and NADPH are required for every molecule of COā‚‚ fixed in the Calvin cycle?
A.
2 molecules of ATP and 3 molecules of NADPH.
B.
2 molecules of ATP and 2 molecules of NADPH.
C.
3 molecules of ATP and 3 molecules of NADPH.
D.
3 molecules of ATP and 2 molecules of NADPH.
Q121 Allen 5. PYQ MCQ
Statement-I : In ${ \mathsf { C } } _ { 3 }$ plants, some ${ { 0 } _ { 2 } }$ binds to RuBisCO, hence $\mathsf { C O } _ { 2 }$ fixation is decreased. Statement-II : In $\mathsf { C } _ { 4 }$ plants, mesophyll cells show very little photorespiration while bundle sheath cells do not show photorespiration. In the light of the above statements, choose the correct answer from the options given below :
A.
Both Statement I and Statement Il are true
B.
Both Statement I and Statement Il are false
C.
Statement I is true but Statement Il is false
D.
Statement I is false but Statement Il is true BPP210
Q122 Allen 5. PYQ MCQ
Which of the following are required for the light reaction of Photosynthesis?
(A) $\mathsf { C O } _ { 2 }$
(B) $\mathsf { O } _ { 2 }$
(C) $H _ { 2 } O$
(D) Chlorophyll
A.
A, C, D and E only
B.
C, D and E only
C.
A and B only
D.
A, C and E only
Q123 Allen 5. PYQ MCQ
Which one of the following products diffuses out of chloroplast during photosynthesis?
A.
$\mathsf { A D P }$
B.
NADPH
C.
$\mathsf { O } _ { 2 }$
D.
ATP
Q124 Allen 5. PYQ MCQ
Observe the given figure. Identify the different stages labelled with alphabets by selecting the correct option.
A.
A-Carboxylation, B-Regeneration C-Reduction
B.
A- Reduction, B-Decarboxylation C-Regeneration
C.
A-Carboxylation, B-Reduction, C-Regeneration
D.
A-Reduction, B-Carboxylation, C-Regeneration
Q125 Allen 6. NCERT BASED QUESTIONS MCQ
"Only green part of the plants could release oxygen" this is shown by -
A.
Priestley
B.
Moll
C.
Ingenhousz
D.
Julius Van Sachs