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Photosynthesis In Higher Plants

210 Questions Start Allen Test
All Exams Allen Errorless
Q151 Allen 6. NCERT BASED QUESTIONS MCQ
During photosynthesis the stroma lamellae of chloroplast could perform:
A.
the process of dark reaction in which ATP utilised
B.
the process of light reaction which produce NADPH + Hāŗ
C.
the process of dark reaction which utilise NADPH + Hāŗ
D.
the process of light reaction which produce ATP
Q152 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the following statements are correct regarding synthesis of ATP in chloroplast during photosynthesis?
(A) Splitting of water in stroma helps in creation of proton gradient
(B) Cytochrome complex helps in the release of protons in the lumen of thylakoid by accepting electrons from hydrogen carrier
(C) Movement of protons across the membrane to the stroma through the Fā‚€ of the ATPase is coupled with ATP synthesis
(D) Reduction of NADPāŗ to NADPH + Hāŗ is also a cause for creation of proton gradient
A.
All statements are correct
B.
C and D
C.
A and B
D.
B, C and D
Q153 Allen 6. NCERT BASED QUESTIONS MCQ
What is the correct ratio of ATP utilisation in steps of Calvin cycle?
A.
Reduction : Regeneration :: 1 : 1
B.
Reduction : Regeneration :: 2 : 1
C.
Reduction : Regeneration :: 2 : 2
D.
Reduction : Regeneration :: 1 : 2
Q154 Allen 6. NCERT BASED QUESTIONS MCQ
The cells of Cā‚„ plants those are rich in RuBisCO enzyme, also have which of the following characteristic(s)?
A.
Intercellular spaces absent
B.
Thick walls impervious to gaseous exchange
C.
Large number of chloroplast
D.
All of the above
Q155 Allen 6. NCERT BASED QUESTIONS MCQ
The productivity is better in Cā‚„ plants because:
A.
They increase the intracellular concentration of COā‚‚ in mesophyll cells.
B.
In these plants RuBisCO has much greater affinity for Oā‚‚ than for COā‚‚.
C.
These plants can prevent competitive binding phenomena related to RuBisCO.
D.
These plants minimise the carboxylase activity of RuBisCO.
Q156 Allen 6. NCERT BASED QUESTIONS MCQ
Cā‚ƒ plants respond to higher COā‚‚ concentration by showing increased rates of photosynthesis because:
A.
Current availability of COā‚‚ levels is limiting to the Cā‚ƒ plants.
B.
Cā‚ƒ plants show saturation at about 360 Ī¼L Lā»Ā¹ concentration of COā‚‚.
C.
These plants respond to high COā‚‚ concentration even in low light conditions.
D.
In these plants RuBisCO shows only carboxylation.
Q157 Allen 6. NCERT BASED QUESTIONS MCQ
$2 H _ { 2 } A + C O _ { 2 } \xrightarrow [ ] { } 2 A + C H _ { 2 } O + H _ { 2 }$ in this given equation Hā‚‚A represents to :
A.
Suitable reducible compounds
B.
Suitable oxidisable compound
C.
Suitable buffer
D.
Both 1 and 2
Q158 Allen 6. NCERT BASED QUESTIONS MCQ
The membrane system of chloroplast is responsible for
A.
Trapping the light energy
B.
Synthesis of ATP & NADPH
C.
Enzymatic reactions for $\mathsf { C O } _ { 2 }$ incorporation
D.
Both 1 and 2
Q159 Allen 6. NCERT BASED QUESTIONS MCQ
How does PS-II supply electrons continuously?
A.
By removing electrons from photon
B.
By removing electrons from $H _ { 2 } O$
C.
By removing electrons from $\complement \mathsf { O } _ { 2 }$
D.
By removing electrons from constituent carotenoids
Q160 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the following is not always required for chemiosmosis ?
A.
Membrane
B.
Proton pump
C.
OEC
D.
ATP synthase
Q161 Allen 6. NCERT BASED QUESTIONS MCQ
Classification of biosynthetic phase of dark reaction as Cā‚ƒ & Cā‚„ is primarily based on.
A.
Initial $\mathsf { C O } _ { 2 }$ fixation
B.
Final $\mathsf { C O } _ { 2 }$ assimilation
C.
First $\complement 0 _ { 2 }$ receptor
D.
Number of ATP get consumed
Q162 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the following is not special about $\mathsf { C } _ { 4 }$ plants?
A.
Responsiveness to high light intensities
B.
Lack of photorespiration
C.
Greater productivity
D.
Scotoactive stomata
Q163 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the following is not a plant factor regulating photosynthesis ?
A.
Age of leaf
B.
Number of mesophyll cells
C.
Atmospheric COā‚‚ concentration
D.
Amount of chlorophyll
Q164 Allen 6. NCERT BASED QUESTIONS MCQ
COā‚‚ is the major limiting factor for photosynthesis because the concentration of $\mathsf { C O } _ { 2 }$ is very low in the atmosphere which is :-
A.
between 0.01 and 0.02 per cent
B.
between 0.02 and 0.03 per cent
C.
between 0.03 and 0.04 per cent
D.
between 0.06 and 0.07 per cent
Q165 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the below processes are included
in the dark reaction of photosynthesis ?
(a) Formation of ATP and NADPH
(b) Use of ATP
(c) Reduction of PGA
(d) Water splitting
(e) Oxygen release
A.
a, b and c
B.
c and e
C.
b and c
D.
b, c and e
Q166 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the following statements is correct in relation to the photosynthesis ?
A.
It is the redox reaction during which reduction of $H _ { 2 } O$ and oxidation of $\mathsf { C O } _ { 2 }$ occurs
B.
First of all it started in Chlorella
C.
It converts light energy into chemical energy in night
D.
Photosynthesis results in synthesis of sugar
Q167 Allen 6. NCERT BASED QUESTIONS MCQ
Regarding to given curves select the incorrect identification:
(A) image.png (B) image.png (C) image.png (D) image.png
A.
A is the absorption spectrum of chl 'a'
B.
B is the absorption spectrum of chl 'b'
C.
C is the absorption spectrum of chl 'b'
D.
D is the absorption spectrum of carotenoids.
Q168 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the following step(s) of Calvin cycle require(s) both ATP and NADPH(Hāŗ) ?
A.
Carboxylation and regeneration
B.
Carboxylation
C.
Reduction
D.
Regeneration
Q169 Allen 6. NCERT BASED QUESTIONS MCQ
During photosynthesis, fixation of one $\mathsf { C O } _ { 2 }$ molecule in maize (A) and tomato (B) plant require :-
A.
[A] - 5 ATP & 2 NADPH + 2Hāŗ [B] - 3 ATP & 2 NADPH + 2Hāŗ
B.
[A] - 3 ATP & 2 NADPH + 2Hāŗ [B] - 3 ATP & 2 NADPH + 2Hāŗ
C.
[A] - 2 ATP & 2 NADPH + 2Hāŗ [B] - 3 ATP & 2 NADPH + 2Hāŗ
D.
[A] - 30 ATP & 12 NADPH + 12Hāŗ [B] - 18 ATP & 12 NADPH + 12Hāŗ
Q170 Allen 6. NCERT BASED QUESTIONS MCQ
How many carbons are present in first $\mathsf { C O } _ { 2 }$ acceptor in sorghum ?
A.
5
B.
4
C.
3
D.
2
Q171 Allen 6. NCERT BASED QUESTIONS MCQ
How many electrons are required to produce sufficient reducing power [NADPH + Hāŗ] to fix $6 C O _ { 2 }$ molecules to form glucose?
A.
6 electrons
B.
12 electrons
C.
18 electrons
D.
24 electrons
Q172 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the following is correct for photosynthesis?
A.
Use light energy to drive the synthesis of organic compounds
B.
Primary source of all food on earth
C.
Responsible for release of oxygen into the atmosphere
D.
All of the above
Q173 Allen 6. NCERT BASED QUESTIONS MCQ
Studies by which of the following scientists showed that the green substance in plants is located in special bodies within plant cells?
A.
T.W. Engelmann
B.
Julius Von Sachs
C.
Cornelius Van Niel
D.
Joseph Priestley
Q174 Allen 6. NCERT BASED QUESTIONS MCQ
Action spectrum of photosynthesis roughly resembles the :-
A.
Absorption spectrum of chlorophyll a
B.
Absorption spectrum of chlorophyll b
C.
Both 1 and 2
D.
Absorption spectrum of carotenoids
Q175 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the following is correct for the carbon reactions of photosynthesis ?
A.
They occur in the membranous system of chloroplast
B.
They are not light dependent
C.
They synthesize sugar, ATP and NADPH
D.
They are not directly light driven