Chlorophyll a occurs in All photosynthetic autotrophs

1.Carbon dioxide joins the photosynthetic pathway in
(a) PSI
(b) PSII
(c) light reaction
(d) Dark reaction
Answer: (d)

2.Chlorophyll a occurs in
(a) All photosynthetic autotrophs
(b) In all higher plants
(c) All oxygen liberating autotrophs
(d) All plants except fungi
Answer: (a)

3.Chlorophyll b is
(a) C54H70O6N4Mg
(b) C55H70O6N4Mg
(c) C55H70O5N4Mg
(d) C45H72O5N4Mg
Answer: (b)

4.Chlorophyll is (MP PMT 1996)
(a) Soluble in organic solvents
(b) Soluble in water
(c) Soluble in both organic solvents and water
(d) None of the above
Answer: (a)

5.Chlorophyll is present (CPMT 1987)
(a) On the surface of chloroplast
(b) In the stroma of chloroplast
(c) In the grana of chloroplast  
(d) Dispersed throughout the chloroplast
Answer: (c)

6.Chlorophylls absorb visible light of wavelenghts
(a) 400- 500 nm only
(b) 300- 400 nm only
(c) 600- 800 nm only
(d) 400- 500 nm only and 600- 700 nm only
Answer: (d)

7.Chloroplast contains maximum quantity of
(a) RuDP -carboxylase
(b) Hexokinase
(c) Pyruvic carboxylase
(d) None
Answer: (a)

8.Chloroplast contians maximum quantity of (BHU 1981)
(a) Pyruvic carboxylase(b) Hexokinase
(c) RuDP carboxylate
(d) None of the above
Answer: (c)

9.Chloroplast fixes  (Delhi PMT 1987)
(a) O2
(b) H2
(c) CO2
(d) N2
Answer: (c)

10.CO2 acceptor in C3 plants is (CBSE 1995, 96)
(a) Xylulose-5-phosphate
(b) 3-phosphoglyceric acid
(c) Ribulose 1, 5 diphosphate
(d) Phoshoenol pyruvic acid
Answer: (c)

11.Constituents of pigment system I are located on
(a) Granal thylakoids
(b) Stromal thylakoids
(c) Outer surface of granal and stromal thylakoids
(d) Stroma
Answer: (c)

12.Cyclic photophosphorylation produces
(a) NADPH
(b) ATP and  NADPH
(c) ATP ,  NADPH and O2
(d) ATP only
Answer: (d)

13.Dark reactions of photosynthesis occur in
(a) Granal thylakoid membranes
(b) Stromal lamella membranes
(c) stroma outside photosynthetic lamellae
(d) Periplastidial space
Answer: (c)
14.
During ATP synthesis, electrons pass through
(a) CO2
(b) O2
(c) H2O
(d) Cytochromes
Answer: (d)

15.During dark reaction the three carbon atoms of 3-PGA are derived from
(a) RuBP only
(b) CO2 only
(c) RuBP + CO2
(d) RuBP + CO2  + PEP
Answer: (c)

16.During daylight hours, the rate of photosynthesis is higher than that of respiration, and the ratio of oxygen produced to that of consumed is (CPMT 1984)
(a) 1: 1
(b) 10: 1
(c) 50: 1
(d) 5: 1
Answer: (b)

17.During photosynthesis when PGA is changed into phosphogycleraldehyde, which of the following reactions occurs? (BHU 1980)
(a) Oxidation
(b) Reduction
(c) Electrolysis
(d) Hydrolysis
Answer: (b)

18.Enzymes PEP carboxylase and RuBP caboxylase are located in chloroplasts of
(a) C3 plants
(b) CAM plants
(c) C4 plants
(d) both (b) and (c)
Answer: (d)

19.Ferredoxin is a constituent of
(a) PSI
(b) PSII
(c) Hill reaction
(d) P680
Answer: (a)

20.First stable product of C4 photosynthesis is
(a) Phosphoglyceraldehyde
(b) Malic acid
(c) PGA
(d) RuBP
Answer: (b)