Photosynthesis Questions: Paper - 06

Sr. No.

Questions

Answers

1.

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

2.

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

3.

Chlorophyll b is
(a) C54H70O6N4Mg
(b) C55H70O6N4Mg
(c) C55H70O5N4Mg
(d) C45H72O5N4Mg

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

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

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

7.

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

8.

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

9.

Chloroplast fixes  (Delhi PMT 1987)
(a) O₂
(b) H₂
(c) CO₂ 
(d) N₂

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

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

12.

Cyclic photophosphorylation produces
(a) NADPH
(b) ATP and  NADPH
(c) ATP ,  NADPH and O₂
(d) ATP only

13.

Dark reactions of photosynthesis occur in
(a) Granal thylakoid membranes
(b) Stromal lamella membranes
(c) stroma outside photosynthetic lamellae
(d) Periplastidial space

14.

During ATP synthesis, electrons pass through
(a) CO₂
(b) O₂
(c) H₂O
(d) Cytochromes

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

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

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

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)

19.

Ferredoxin is a constituent of
(a) PSI
(b) PSII
(c) Hill reaction
(d) P680

20.

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