Photosynthesis Questions: Paper - 08

Sr. No.

Questions

Answers

1.

In which of the following the rate of photosynthesis is decreased and is known as red drop (MP PMT 1992)
(a) Blue light 
(b) Green light
(c) Red light more than 680 nm 
(d) Red light less than 680 nm

2.

Intact chloroplast from green leaves cab be isolated by (AIIMS 1990)
(a) Acetone 
(b) Ethanol
(c) Alcohol 
(d) Sugar solution

3.

Isotopes employed to study photosynthesis are
(a) 11C and 32P
(b) 15C and 32P
(c) 16C and 15O
(d) 14C and 18O

4.

Isotopes popularly known to have been used in the study of photosynthesis are (BHU 1985)
(a) C14 and O18
(b) C11 and C32
(c) C16 and N15
(d) P32 and C15

5.

Kranz anatomy is typical of
(a) C₄ plants
(b) C₃ plants
(c) C₂ plants
(d) CAM plants

6.

Light energy is conveted into chemical energy in the presence of (MP PMT 1994)
(a) Pyrenoids 
(b) Chloroplasts
(c) Ribosomes 
(d) Mesosomes

7.

Light is necessary during photosynthesis for
(NCERT 1978)
(a) Evolution of hydrogen 
(b) Photolysis of water
(c) Heating   
(d) Breakdown of chlorophyll

8.

Maize, sugarcane and some other tropical plants have high efficiency of CO₂ fixation because they operate
(a) Calvin cycle
(b) Hatch – Slack cycle
(c) TCA cycle
(d) PP pathway

9.

Make suitable pair
(A) Emerson effect - (a) C4 cycle
(B) Hill reaction - (b) Photolysis
(C)   Calvin’s cycle - (c)     C3 cycle
(D)   Hatch and Slack cycle - (d)     Photosystem-I & II
(Rajasthan PMT 1997) 
(a) Aa, Bb, Cc, Dd
(b) Aa, Bc, Cd Da
(c) Ac, Bd, Ca, Db
(d) Ad, Bb, Cc, Da

10.

Most effective wavelength of light for photosynthesis is
(a) green
(b) Violet
(c) Red
(d) Yellow

11.

NADP is reduced to NADPH in
(a) PSI
(b) PSII
(c) Calvin cycle
(d) Noncyclic photophosphorylation

12.

Nine-tenth of all photosynthesis of world (85-90%) is carried out by
(a) Large trees with millions of branches and levess
(b) Algae of the ocean
(c) Chlorophyll containing ferns of the forest
(d) Scientist in the laboratories

13.

Nobel prize was awarded to the scientist for discovering the pathway of carbon assimilation
(a) Watson
(b) Krebs
(c) Calvin
(d) Parnas

14.

Number of calvin cycles required to generate a molecule of hexose is
(a) 2
(b) 4
(c) 6
(d) 8

15.

One sixth part of the total PGAL produced is used for synthesis of
(a) Glucose
(b) RuBP
(c) RuMP
(d) DHAP

16.

Oxidative phosphorylation occurs during the process of (MP PMT 1994, 98)
(a) Protein synthesis
(b) N2 fixation
(c) Respiration
(d) Transpiration

17.

Oxygen containing carotenoids are
(a) Carotenes
(b) Xanthophylls
(c) Phycobilins
(d) Anthocyanins

18.

Oxygen liberated during photosynthesis comes from
(a) CO₂
(b) Glucose
(c) H₂O
(d) Fructose

19.

P700 is a special from of which pigment (Rajasthan PMT 1997)
(a) Chlorophyll-b
(b) Carotenes
(c) Chlorophyll-a
(d) Phycobilins

20.

Path of dark reaction of photosynthesis was traced through the use of
(a) ³²P
(b) ¹⁴CO₂
(c) ¹⁸O₂
(d) X-rays