CBSE Questions for Class 11 Medical Biology Photosynthesis In Higher Plants Quiz 2 - MCQExams.com

ATP formation during photosynthesis is
  • Phosphorylation
  • Photophosphorylation
  • Oxidative phosphorylation
  • None of the above
Which of the following product of Hill's are used in Blackman's reaction?
  • $$NAD$$, $$ATP$$
  • $$ATP$$, $$NADH_{2}$$
  • $$ATP$$, $$NADPH_{2}$$
  • $$ADP$$, $$NAD$$
The oxygen produced during photosynthesis comes from photolysis of water was first time proved by 
  • Ruben and Kamen
  • Robert Mayer
  • Malvin Calvin
  • Blackman
During photosynthesis 
  • $$O_{2}$$ evolved comes from $$CO_{2}$$
  • ATP is formed
  • ATP is not formed
  • Water is required as medium but it does not take part in photosynthesis
Calvin cycle is found:
  • Only in $$C_{3}$$ plants
  • Only in photophillous plants
  • In all $$C_{4}$$ plants
  • In all photosynthetic plants
People who received Nobel Prizes for their work on green plants are
  • Calvin and Waston
  • Calvin and Borlaug
  • Beadle and Tatum
  • Flemming and Waksman
As compared to a $$C_{3}$$ plant,how many additional molecules of ATP are needed for net production of one molecule hexose sugar by $$C_{4}$$ plants______________.
  • Two
  • Six
  • Zero
  • Twelve
$$C_{4}$$ plants are found among ____________.
  • Gramineae only
  • Monocots only
  • Dicots only
  • Monocots as well as dicots
The algae used by Calvin for photosynthetic research was
  • Chlorella
  • Chlamydomonas
  • Volvox
  • All of the above
Dimorphic chloroplasts are present in
  • Sugarcane
  • Cotton
  • Pea
  • Mango
Who received the Nobel Prize for working out the early carbon pathway of photosynthesis? 
  • Calvin
  • Krebs
  • Khorana
  • Watson
Chloroplast fixes
  • O$$_{2}$$
  • H$$_{2}$$
  • CO$$_{2}$$
  • N$$_{2}$$
Identify the incorrect statement with respect to Calvin cycle.
  • The carboxylation of RuBP is catalysed to form phosphoglycerate.
  • The first stable intermediate compound formed is phosphoglycerate.
  • 18 molecules of ATP are synthesized during carbon fixation.
  • NADPH+$$H^{+}$$ produced in light reaction is used to reduce diphosphoglycerate.
Rearrange the following stages of Calvin cycle in correct order.
Reduction during which carbohydrate is formed at the expense of the photochemically made ATP and NADPH.
Regeneration, during which the carbon dioxide acceptor ribulose-1,5-biphosphate is formed.
Carboxylation during which carbon dioxide combines with ribulose-1,5-biphosphate.
  • 3 --> 1 --> 2
  • 3--> 2
  • 1 -->  2 --> 3
  • 2 --> 1 --> 3
  • 1 --> 3 --> 2
First stable product of calvin cycle has
  • 2 carbon atoms
  • 3 carbon atoms
  • 4 carbon atoms
  • 6 carbon atoms
PGA as the first CO$$_{2}$$ fixation product was discovered in photosynthesis of
  • Algae
  • Bryophyte
  • Gymnosperm
  • Angiosperm
Match the column.
  List I List II 
 1 Emerson effect a $$C_{4}$$cycle
 2 Hill reaction b Photolysis
 3 Calvin cycle c $$C_{3}$$cycle
 4 Hatch and Slack cycle d Photosystem- I and II
  • 1- a, 2- b, 3- c, 4- d
  • 1- a, 2- c, 3- d, 4- b
  • 1- c, 2- d, 3- a, 4- b
  • 1- d, 2- b, 3- c, 4- a
The enzyme responsible for primary carboxylation in $$C_{3}$$ plants is ?
  • Hexokinase
  • Succinic dehydrogenase
  • Pyruvate carboxylase
  • RuBP carboxylase oxygenase
Consider the following statements. State which among the following is true and false.
(A) The portion of the spectrum between 500nm and 800nm is also referred to as photosynthetically active radiation.
(B) Magnesium, calcium and chloride ions play prominent roles in the photolysis of water.
(C) In cyclic photophosphorylation oxygen is not released and NADPH is also not produced.
  • A is true, but B and C are false
  • A and B are false, but C is true
  • B is true, but A and C are false
  • A and B are true, but C is false
  • A and C are true, but B is false
Result of light reaction is 
  • Only ATP
  • Only NADPH$$_{2}$$
  • ATP and NADPH$$_{2}$$
  • Only FAD
  • None of the above
In which of the following options, correct words for all three blanks A, B and C are indicated?
65525_948a8d21d6d047dbb6e33c67475b42a1.png
  • A- Decarboxylation, B- Reduction, C- Regeneration
  • A- Fixation, B- Transamination, C- Regeneration
  • A- Fixation, B- Decarboxylation, C- Regeneration
  • A- Carboxylation, B- Decarboxylation, C- Reduction
Non-cyclic photophosphorylation involves
  • PS- I and PS- II
  • PS- I only
  • PS- II only
  • Stroma matrix
NADP is converted into NADPH$$_{2}$$ in
  • Photosystem- I
  • Non- cyclic photophosphorylation
  • Calvin cycle
  • Photosystem- II
$$CO_{2}$$ joins the photosynthetic pathway during:
  • Light reaction
  • Dark reaction
  • Photosystem- I
  • Photosystem- II
In non-cyclic photophosphorylation there is photolysis of 12 water molecules. How many $$H^{+}$$ are formed?
  • 24 $$H^{+}$$
  • 36 $$H^{+}$$
  • 12 $$H^{+}$$
  • 32 $$H^{+}$$
In non-cyclic photophosphorylation, the pigment molecule first excited is known as
  • $$P_{680}$$
  • $$P_{700}$$
  • Chlorophyll- b
  • Xanthophyll
In $$C_{4}$$ plants, CO$$_{2}$$ combines with PEP in the presence of
  • PEP carboxylase
  • RuBP carboxylase
  • RuBP oxygenase
  • Hydrogenase
Z-scheme show the transfer of electrons involving 
  • Bundle sheath cells
  • PS I
  • PS II
  • Both (B) and (C)
The family in which many plants are $$C_{4}$$ type is
  • Malvaceae
  • Solanaceae
  • Crucifereae
  • Gramineae
The z scheme of photosynthesis was proposed by 
  • Hill and Bendall
  • Emerson
  • Arnon
  • Rabinowitch and Govindjee
Photolysis of water by isolated chloroplast was demonstrated by
  • Hill
  • Von Niel
  • Liebig
  • Calvin
Which one of the following statement about cytochrome $$P_{450}$$ is wrong?
  • It has an important role in metabolism.
  • It contain iron.
  • It is a coloured cell.
  • It is an enzyme involved in oxidation reaction.
Hill reaction involves
  • High altitude plants
  • Total darkness
  • Absence of water
  • Photosystem II
Which one of the following concerns photophosphorylation?
  • AMP +Inorganic $$PO_{4}$$ $$\overset{lightenergy}{\rightarrow}$$ ATP
  • ADP + AMP $$\overset{lightenergy}{\rightarrow}$$ ATP
  • ADP + Inorganic $$PO_{4}$$ $$\overset{lightenergy}{\rightarrow}$$ ATP
  • ADP + Inorganic $$PO_{4}\rightarrow$$ ATP
During non-cyclic photophosphorylation in which of the following, $$4e^{-}$$ produced through photolysis will enter?
  • PS- II
  • PC
  • PQ
  • PS- I
In the above schematic diagram, identify plastocyanin.
66470_0989066fe6344eaaa34c8d7c14e5b44c.png
  • C
  • D
  • A
  • B
Which one is $$Cu^{++}$$ containing pigment?
  • Ferredoxin
  • Plastocyanin
  • Plastoquinone
  • Cytochrome
Which region of the visible spectrum of solar radiation are primarily absorbed by carotenoids of the higher plants?
  • Violet and blue
  • Blue and green
  • Green and red
  • Red and violet
Which one is a $$C_{4}$$ plant?
  • Papaya
  • Pea
  • Potato
  • Maize
The first carbon fixation in $$C_{4}$$ pathway occurs in chloroplast of
  • Guard cells
  • Mesophyll cells
  • Bundle sheath cells
  • Epidermal cells
An alternate $$CO_{2}$$ fixation mechanism was found in some tropical species of grass family by Hatch and Slack. Where were they from?
  • England
  • USA
  • Australia
  • New Zealand
Which of the following statement with regard to photosynthesis is/are correct?
A. In $$C_{4}$$ plants, the primary $$CO_{2}$$ acceptor is PEP.
B. In the photosynthetic process, PS II absorbs energy at or just below 680 nm.
C. The pigment that is present in the pigment system I is $$P_{683}$$.
  • B and C only
  • A only
  • C only
  • A and B only
  • A and C only
$$C_{4}$$ plants are also known as
  • Hatch and Slack type
  • Calvin type
  • Calvin and Benson type
  • Emerson type
In $$C_{4}$$ plants, the bundle sheath cells
  • Have thin walls to facilitate the gaseous exchange
  • Have large intercellular spaces
  • Are rich in PEP carboxylase
  • Have a high density of chloroplast
The $$C_{4}$$ plants are photosynthetically more efficient than $$C_{3}$$ plants because
  • The $$CO_{2}$$ efflux is not prevented.
  • They have more chloroplast.
  • The $$CO_{2}$$ compensation point is more.
  • $$CO_{2}$$ generated during photorespiration is trapped and recycled through PEP carboxylase.
The energy wastage occurs during: 
  • Dark respiration
  • Photosynthesis
  • Glycolysis
  • Photorespiration
The enzyme which catalyses the carbon dioxide fixation in $$C_{4}$$ cycle is
  • RuBP carboxylase
  • PEP carboxylase
  • Carbonic anhydrase
  • None of the above
In photorespiration, what is the role of peroxisome?
  • Help in oxidation of glycolate
  • Help in oxygenation of glycolate
  • Help in synthesis of PGA
  • Help in reduction of glyoxylate
During photorespiration the oxygen consuming reaction occur in 
  • Grana of chloroplast and peroxisomes
  • Stroma of chloroplasts
  • Stroma of chloroplasts and mitochondria
  • Stroma of chloroplasts and peroxisomes
Photorespiration is a characteristic feature of :
  • CAM plants
  • $$C_{3}$$ plants
  • $$C_{4}$$ plants
  • None of the above
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