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Photosynthesis In Higher Plants

210 Questions Start Allen Test
All Exams Allen Errorless
Q51 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Connecting link between light phase and dark phase of photosynthesis, is :-
A.
Only ATP
B.
Only NADPH(H⁺)
C.
Only NADH + H⁺
D.
ATP & NADPH(H⁺)
Q52 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
In photosynthesis CO₂ combines with :-
A.
RUBP
B.
ATP
C.
ADP
D.
PGA
Q53 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
During the dark reactions of photosynthesis:—
A.
Water splits
B.
CO₂ is reduced to organic compounds
C.
Chlorophyll is activated
D.
Stable C₆-sugar is broken into three carbon sugars
Q54 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
The enzyme that fixes atmospheric CO₂ in C₄ plants is :-
A.
PEP carboxylase
B.
Hexokinase
C.
RUBP oxygenase
D.
Hydrogenase
Q55 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
During photosynthesis when PGA is changed intophosphoglyceraldehyde which of the following reaction occur?
A.
Oxidation
B.
Reduction
C.
Electrolysis
D.
Hydrolysis
Q56 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Carbon refixation in C4 plants occurs in chloroplasts of :-
A.
Palisade tissue
B.
Spongy Mesophyll
C.
Bundle sheath cells
D.
Guard cells
Q57 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Tropical plants like sugarcane show high efficiency of CO₂ fixation because of :-
A.
Calvin cycle
B.
Hatch - Slack cycle
C.
Cyclic photophosphorylation
D.
TCA Cycle
Q58 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
"Kranz" type of anatomy is found in :-
A.
C4 plant
B.
C3 plant
C.
Succulent plants
D.
All of the above
Q59 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Which of the following is C₄ plants ?
A.
Maize
B.
Atriplex
C.
Sugarcane
D.
All of the above
Q60 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Which pair is wrong?
A.
C₃ plant - maize
B.
Calvin cycle - PGA
C.
Hatch and Slack cycle - Maize
D.
C₄-plant - Kranz Anatomy
Q61 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
C4 plants are found among :-
A.
Only Gramineae family
B.
Only monocots
C.
Only dicots
D.
Monocots as well as dicots
Q62 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
In case of $\mathsf { C } _ { 4 }$ pathway, the first step is :-
A.
$\mathsf { C O } _ { 2 }$ combines with RUBP
B.
$\mathsf { C O } _ { 2 }$ combines with PGA
C.
$\mathsf { C O } _ { 2 }$ combines with PEP
D.
$\mathsf { C O } _ { 2 }$ combines with PGAL
Q63 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
In dark reaction, first reaction is the :-
A.
Carboxylation
B.
Decarboxylation
C.
Dehydrogenation
D.
Deamination
Q64 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Number of ATP molecules required for regeneration phase of RUBP during synthesis of 1 glucose molecule :-
A.
6
B.
12
C.
18
D.
30
Q65 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Isotopes employed to study the process of photosynthesis reaction.
A.
$\mathsf { S } ^ { 3 5 }$ and ${ \mathsf P } ^ { 3 2 }$
B.
${ \mathsf { C } } ^ { 1 4 }$ and ${ \boldsymbol { 0 } } ^ { 1 8 }$
C.
${ \mathsf { N } } ^ { 1 4 }$ and ${ \mathsf { C o } } ^ { 6 0 }$
D.
${ \mathsf { N } } ^ { 1 4 }$ and ${ 0 ^ { 1 8 } }$
Q66 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Chloroplast is present in bundle sheath cells of :-
A.
${ \mathsf { C } } _ { 3 }$ plants
B.
C4 plants
C.
CAM plants
D.
Photorespiring plants
Q67 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
CO₂ is accepted by RUBP in C₄ plants in :-
A.
Mesophyll cells
B.
Bundle sheath cells
C.
Stomatal guard cells
D.
Epidermal cells
Q68 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Bundle sheath chloroplasts of $\mathsf { C } _ { 4 }$ plant are :
A.
Large & agranal
B.
Large & granal
C.
Small & agranal
D.
Small & granal
Q69 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
In addition to the 12 molecules of NADPH(H⁺), the energy required for the synthesis of one mole of hexose by ${ \mathsf { C } } _ { 3 }$ and $\mathsf { C } _ { 4 }$ pathway is -
A.
18 & 18 molecules of ATP respectively
B.
30 & 30 molecules of ATP respectively
C.
18 & 30 molecules of ATP respectively
D.
30 & 18 molecules of ATP respectively
Q70 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
How many Calvin cycles would generate one molecule of glucose/hexose ?
A.
One cycle
B.
Three cycles
C.
Six cycles
D.
Twelve cycles
Q71 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
CAM - plants are :-
A.
Succulent xerophyte
B.
Hydrophytes
C.
Epiphytes
D.
Mesophytes
Q72 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
The first stable product of Calvin cycle and Hatch stack pathway are :-
A.
4-C and 3-C compounds respectively
B.
4-C and 6-C compounds respectively
C.
3-C and 4-C compounds respectively
D.
5-C and 4-C compounds respectively
Q73 Allen 3. WHERE ARE THE ATP AND NADPH USED MCQ
Which of the following was used during discovery of Calvin cycle ?
A.
Spirogyra
B.
Volvox
C.
Chlamydomonas
D.
Chlorella
Q74 Allen 4. PHOTORESPIRATION & FACTOR AFFECTING PHOTOSYNTHESIS MCQ
Which one of the following have high $\complement 0 _ { 2 }$ compensation point ?
A.
C₂ plants
B.
C₃ plants
C.
$\mathsf { C } _ { 4 }$ plants
D.
CAM plants
Q75 Allen 4. PHOTORESPIRATION & FACTOR AFFECTING PHOTOSYNTHESIS MCQ
First stable product of Photorespiration is :-
A.
PGAL
B.
Glycerate
C.
Glycine
D.
Phosphoglycolate