Dr. AASHISH H. PANCHAL
(M.Pharm., Ph.D.)
TRISHA INSTITUTE OF BIOLOGY
GSEB/CBSE/ISC/NEET
COMPLETE BIOLOGY SOLUTION
STD-12 (Semester-3)
Sub: Biology (056) (E)
Time: 1.5 hour
PART-A
CHAPTER-3
Marks:50
1. ______ ions help in photolysis of water.
(a) Mn++
(b) Mg++
(c) Cl(d) both (a) and (c)
2. During light phase of photosynthesis ______ is oxidized and ______ is reduced.
(a) CO2 and Water (b) Water and CO2
(c) Water and NADP
(d) NADPH2 and CO2
3. To produce 3 glucose molecules ______ ATP and ______ NADPH2 molecules are required.
(a) 54, 36
(b) 54, 30
(c) 36, 60
(d) 18, 12
4. Glycolytic reversal is a part of ______.
(a) aerobic respiration
(b) anaerobic respiration
(c) light phase of photosynthesis
(d) dark phase of photosynthesis
5. RuBp carboxylase acts as RuBp carboxygenase at ______ CO2 conc. And ______ O2 conc.
(a) low, low
(b) low, high
(c) high, high
(d) high, low
6. The source of CO2 during calvin cycle in C4 plant is
(a) Malic acid
(b) OAA
(c) PEP
(d) RuDP
7. Dimorphic chloroplast (Dual type of chloroplast)are present in ______.
(a) zeamays
(b) sacchrum officinale (sugar) (c) a and b
(d) none
8. Dark reaction requires light reaction for
(a) carboxylation of RUBP
(b) regeneration of RUBP
(c) reduction of PGA
(d) formation of hexose sugar
9. Light reaction of photosynthesis results in formation of ______.
(a) O2
(b) NADPH + H+
(c) ATP
(d) All of these
10. What will happen to the rate of photosynthesis if sodium bicarbonate is added in the
water having hydrilla plant in a beaker
(A) It will remain normal
(B) It will be decreased
(C) It will be stopped
(D) It will be accelerated
11. Which of the following gas would disappear from the atmosphere if all the
photosynthetic activities were to stop?
(A) Nitrogen
(B) Carbondioxide
(C) Hydrogen
(D) Oxygen
12. For the process of photosynthesis all except one of the following items are essential.
Point out the exception
(A) CO2, optimum temperature
(B) Glucose and oxygen
(C) Water and minerals
(D) Light and chlorophyll
13. The prerequisities of Calvins cycle are
(A) H2O, CO2, ATP (B) ATP, H2O, NADPH2 (C) CO2, ATP, NADPH2 (D) NADPH2, H2O, CO2
14. Reduction of co-enzyme NADP depends on
(A) Reduction of CO2
(B) Evolution of O2
(C) Photolysis of water
(D) Formation of ATP
M.No. : 09898715582,
E-mail: [email protected]
Page 1
Dr. AASHISH H. PANCHAL
(M.Pharm., Ph.D.)
TRISHA INSTITUTE OF BIOLOGY
GSEB/CBSE/ISC/NEET
COMPLETE BIOLOGY SOLUTION
15. In C4 plants, carboxylation is twice, it can be represented as
(A) Pyruvic acid + CO2 malic acid + CO2
(B) RUDP + CO2 and pyruvic acid + CO2
(C) PEPA + CO2 and RUDP + CO2
(D) PEPA + CO2 and malic acid + CO2
16. During photosynthesis the reaction when PGA is converted into PGAL, is called
(A) Isomerization
(B) Reduction
(C) Oxidation
(D) Phosphorylation
17. In C4 plants, synthesis of glucose occurs in
(A) Spongy cells
(B) Bundle sheath cells (C) Mesophyll cells (D) Palisade cells
18. ATP synthesis during light reaction is
(A) Photophosphorylation
(B) Photolysis
(C) Oxidative phosphorylation
(D) Phosphorylation
19. The rate of photosynthesis is maximum in
(A) Blue light
(B) Red light
(C) Green light
(D) Violet light
20. The malic acid in bundle sheath chloroplast of C4 plants is decarboxylated to form
(A) OAA
(B) Pyruvic acid (C) PEPA
(D) Aspartic acid
21. C4 plants show very high rate of photosynthesis as compare to C3 plants, because of
(A) Dicarboxylation
(B) Bundle sheath cells
(C) Absence of photorespiration
(D) All the above
22. Which of the following does not require the external electron sources
(A) Cyclic phtophosphorylation
(B) Photorespiration
(C) Substrate level phosphorylation
(D) Non-cyclic photophosphorylation
23. In C3 pathway, out of 12 molecules of 3-PGAL, how many are used for regeneration
of RUDP?
(A) 12
(B) 8
(B) 10
(c) 6
24. Both respiration and photosynthesis require
(a) Sunlight
(b) Green cells
(c) cytochromes
(d) Organic substrate
25. C4 cycle was discovered by
(a) Hill
(b) Calvin
(c) Hatch and slack
(d) Blackma
26. In pigment system II, active chlorophyll is
(a) P680
(b) P700
(c) P673
(d) P720
27. One sixth part of the total PGAL produced is used for synthesis of
(a) Glucose
(b) RuBP
(c) RuMP
(d) DHAP
28. Which of the following statements about photosynthesis is true?
(a) The light-dependent reactions can occur only in the light, the light-independent reactions only
in the dark
(b)Photorespiration is more efficient at producing glucose than is photosynthesis
(c)The light-dependent reactions produce the energy-rich compounds that are used to run the
light-independent reactions
(d)All of the above are true
29. The final product of the Calvin cycle is
M.No. : 09898715582,
E-mail: [email protected]
Page 2
Dr. AASHISH H. PANCHAL
(M.Pharm., Ph.D.)
TRISHA INSTITUTE OF BIOLOGY
GSEB/CBSE/ISC/NEET
COMPLETE BIOLOGY SOLUTION
(a)RuPB
(b)PGA
(c)ATP
(d)Glucose
30. During what stage of photosynthesis is O2 produced?
(a) Cyclic photophosphorylation
(b) Carbon fixation
(c) The light-dependent reactions involving photosystems I and II
(d) The Krebs cycle
31. During what stage of photosynthesis are ATP and NADPH converted to ADP + Pi and
NADP+?
(a) Biosynthetic phase
(b)The Light-Independent Reactions
(c)Both Of The Above
(c)None Of The Above
32. Which of the following represents light reaction ?
(a)
(b)
(c)
(d)
33. Which of the following occurs during the light-dependent reactions of plants?
a)Electron Transport
(b)Chemiosmosis (c)Splitting Of Water
(d)All Of The Above
34. Which of the following is mismatched?
(a) Photosystem I - uses the P700 molecule in its photocenter
(b) Antenna complex - contains hundreds of pigment molecules
(c) CAM plants - open their stomata during the day and close them at night to avoid
photorespiration
(d) C4 plants - expend ATP to concentrate CO2 in bundle-sheath cells to avoid photorespiration
35. Which of the following statements accurately describes the relationship between
photosynthesis and cellular respiration?
(a) Photosynthesis occurs only in autotrophs; cellular respiration occurs only in heterotrophs
(b) Photosynthesis uses solar energy to convert inorganics to energy-rich organics; respiration
breaks down energy-rich organics to synthesize ATP
(c) Photosynthesis involves the oxidation of glucose; respiration involves the reduction of CO2
(d) The primary function of photosynthesis is to use solar energy to synthesize ATP; the primary
function of cellular respiration is to break down ATP and release energy.
36. The primary form of sugar transported from the site of photosynthesis to the rest of the
plant is:
(a) Glyceraldehyde 3-phosphate
(b) Fructose
(c) Glucose
(d) Sucrose
M.No. : 09898715582,
E-mail: [email protected]
Page 3
Dr. AASHISH H. PANCHAL
(M.Pharm., Ph.D.)
TRISHA INSTITUTE OF BIOLOGY
GSEB/CBSE/ISC/NEET
COMPLETE BIOLOGY SOLUTION
37. Match the sites in column I with the processes in column II and choose the correct
combination from the options
Column I
Column II
A. Grana of chloroplast
1. Kreb's cycle
B. Stroma of chloroplast
2. Light reaction
C. Cytoplasm
3. Dark reaction
D. Mitochondrial matrix
4. Glycolysis
(a) A–4, B–3, C–2, D–1
(b) A–1, B–2, C–4, D–3
(c) A–2, B–3, C–4, D–1
(d) A–3, B–4, C–1, D–2
38. What will be the effect when very high intensity of light and low CO2 is supplied to a
photosynthesis system
(a) Process will increase
(b)
Process will decrease
(c) Photooxidation
(d)
None of the above
39. Assertion :
If CO2 is increasing continuously, there will be a increase in
photosynthesis.
Reason :
CO2 is the main substrate of photosynthesis.
(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(c) If the assertion is true but the reason is false
(d)
If the assertion is false but reason is true
40.
Labeled A, B, And C
(a) Cyt. b6, A(FeS), Cyt. F,
(b) A(FeS), Cyt. b6, Cyt. F
(c) Cyt. F ,A(FeS) Cyt. b6,
(d) Cyt. b6, Cyt. F, A(FeS)
Q-2 ANSWERS THE FOLLOWING
10
41. Explain the Calvin cycle, C4 Pathway and Photorespiration with flow chart.
M.No. : 09898715582,
E-mail: [email protected]
Page 4
Dr. AASHISH H. PANCHAL
GSEB/CBSE/ISC/NEET
(M.Pharm., Ph.D.)
TRISHA INSTITUTE OF BIOLOGY
COMPLETE BIOLOGY SOLUTION
ANSWER KEY
1
D
11
D
21
C
31
C
M.No. : 09898715582,
2
C
12
B
22
A
32
C
3
A
13
C
23
B
33
D
4
D
14
C
24
C
34
C
5
B
15
C
25
C
35
B
6
A
16
B
26
A
36
D
7
C
17
B
27
A
37
C
E-mail: [email protected]
8
C
18
A
28
C
38
C
9
D
19
B
29
D
39
D
10
D
20
B
30
C
40
D
Page 5