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Free download in PDF Photosynthesis and Respiration Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries.
(21)
In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis translocates protons from
[A]
the stroma to the photosystem II
[B]
the matrix to the stroma
[C]
the stroma to the thylakoid space
[D]
the intermembrane space to the matrix
Answer: the stroma to the thylakoid space
(22)
Which of the following does not occur during the Calvin cycle?
[A]
carbon fixation
[B]
oxidation of NADPH
[C]
release of oxygen
[D]
regeneration of the CO2 acceptor
Answer: release of oxygen
(23)
How is photosynthesis similar in C4 and CAM plants?
[A]
In both cases, only photosystem I is used
[B]
Both types of plants make sugar without the Calvin cycle
[C]
In both cases, rubisco is not used to fix carbon initially
[D]
Both types of plants make most of their sugar in the dark
Answer: In both cases, rubisco is not used to fix carbon initially
(24)
Which of the following sequences correctly represents the flow of electrons during photosynthesis?
[A]
NADPH → O2 → CO2
[B]
H2O → NADPH → Calvin cycle
[C]
NADPH → chlorophyll → Calvin cycle
[D]
H2O → photosystem I → photosystem II
Answer: H2O → NADPH → Calvin cycle
(25)
Why are C4 plants able to photosynthesize with no apparent photorespiration?
[A]
They do not participate in the Calvin cycle
[B]
They use PEP carboxylase to initially fix CO2
[C]
They are adapted to cold, wet climates
[D]
They conserve water more efficiently
Answer: They use PEP carboxylase to initially fix CO2
(26)
In metabolic processes of cell respiration and photosynthesis, prosthetic groups such as heme and iron -sulfur complexes are encountered. What do they do?
[A]
donate electrons
[B]
act as reducing agents
[C]
act as oxidizing agents
[D]
both oxidize and reduce during electron transport
Answer: both oxidize and reduce during electron transport
(27)
Conversion of pyruvic acid into ethyl alcohol is facilitated by the enzymes:
[A]
carboxylase
[B]
phosphatase
[C]
dehygrogenase
[D]
carboxylase and dehygrogenase
Answer: carboxylase and dehygrogenase
(28)
The final acceptor of electrons in the electron transport chain is
[A]
Water
[B]
Oxygen
[C]
Hydrogen
[D]
Cytochrome b
(29)
Classification of organisms as oxygenic or anoxygenic during photosynthesis is based on ______
[A]
The presence of Co2
[B]
The generation of oxygen
[C]
The presence of light
[D]
The presence of water
Answer: The generation of oxygen
(30)
Name the mechanism which prevents photo-oxidative damage in plants?
[A]
Photosynthesis
[B]
Photorespiration
[C]
Photoprotection
[D]
Phytoprotection
31
What is the location of photosynthetic pigment in an oxygenic photosynthetic organism?
[A]
Plasma membranes
[B]
Thylakoid membranes
[C]
Chromatophores
[D]
Chlorosome
Answer: Thylakoid membranes
32
Which of the following is an anoxygenic photosynthetic organism?
[A]
Plants
[B]
Photosynthetic protists
[C]
Cyanobacteria
[D]
Green and Purple photosynthetic organism
Answer: Green and Purple photosynthetic organism
33
Which of these features are not of chlorophyll?
[A]
It has Mg2+ as the central metal ion
[B]
It has cyclopentanone ring fused with a pyrrole ring
[C]
It has a planer tetrapyrrole ring structure
[D]
It is water-soluble pigment
Answer: It is water-soluble pigment
34
Rate of photosynthesis does not depend upon:
[A]
Quality of light
[B]
Intensity of Light
[C]
Duration of Light
[D]
Temperature
Answer: Duration of Light
(15)
For photosynthesis green plants require:
[A]
Chlorophyll only
[B]
Light
[C]
Carbon dioxide and water
[D]
All of the above
36
Name the pigment which is responsible for absorption of light in plants?
[A]
Chlorophyll
[B]
Stoma
[C]
Xylem
[D]
Phloem
37
In bacteria name the colour of light which is responsible for photosynthesis?
[A]
Ultra-Violet
[B]
Blue
[C]
Red
[D]
None of above
38
Name the metal present in chlorophyll ‘a’ and ‘b’?
[A]
Iron
[B]
Copper
[C]
Magnesium
[D]
Manganese
39
The process of respiration in green plants occurs
[A]
only when stomata are open
[B]
only when photosynthesis ceases
[C]
only when photosynthesis is in progress
[D]
At all times
(20)
Respiratory enzymes are located in
[A]
Mitochondrial Matrix
[B]
Cristae
[C]
Perimitochondrial Space
[D]
Outer Membrane
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