In chlorophyll structure four pyrole rings are united with Mg by their atoms of
67%
a) N
0%
b) C
0%
c) H
33%
d) O
Q.2.
Dimorphic chloroplast are present in ______.
0%
a) zea mays
0%
b) sacchrum officinale
0%
c) sorghum bicolor
100%
d) all of these
Q.3.
During light phase of photosynthesis ______ is oxidized and ______ is reduced.
0%
a) CO2 and Water
0%
b) Water and CO2
50%
c) Water and NADP
50%
d) NADPH2 and CO2
Q.4.
Loculus is the internal space of
0%
a) Grana
67%
b) Stroma
33%
c) Thylakoid
0%
d) Quantasome
Q.5.
85-90% (9/10) of all photosynthesis in the world is carried out by
50%
a) Shrubs
50%
b) Algae of the oceans
0%
c) Herbs
0%
d) Scientists in the laboratory
Q.6.
Q10 is
100%
a) respiratory coefficients
0%
b) photosynthetic coefficient
0%
c) photosynthetic yield
0%
d) temperature coeffiecient
Q.7.
Hill reaction takes place
0%
a) in the absence of CO2
100%
b) in the presence of carbon dioxide
0%
c) in the absence of a suitable electron acceptor
0%
d) none above
Q.8.
Choose the correct statement
100%
a) Chl a is blue green pigment with formula C55H70O6N4Mg
0%
b) Chl a is blue green pigment with formula C55H72O5N4Mg
0%
c) Chl b is yellow green pigment with formula C55H70O5N4Mg
0%
d) Xanthophyll is pigment with formula C40H60
Q.9.
Stomata of CAM plants
0%
a) are always open
50%
b) open during the day and close at right.
25%
c) open during the night and close during the day.
25%
d) never open
Q.10.
The reduction of ADP to ATP occurs by
0%
a) oxidation of water
0%
b) high conc. of H+ ions across the membrane
100%
c) oxidation of NADPH
0%
d) release of electron from PS-II to PS-I
Q.11.
The visible product of photosynthesis is ______.
50%
a) glucose
50%
b) cellulose
0%
c) starch
0%
d) fructose
Q.12.
Temperature is very high but a plant is showing photosynthesis with normal rate, probably it would be
0%
a) C3 plant
0%
b) Mango plant
0%
c) Pea plant
100%
d) Sugarcane plant
Q.13.
Chlorophyll-a differes from chlorophyll-b in having—
50%
a) Methly group instead of aldehyde group
50%
b) Aldehyde group instead of methyl group
0%
c) Methyl group instead of ethyl group
0%
d) Only phytol tail instead of head
Q.14.
The numbner of photons needed for the evolution of one molecule of oxygen is
0%
a) 8
100%
b) 2
0%
c) 12
0%
d) 18
Q.15.
C4 plants can perform photosynthesis
0%
a) Even in low light intensity
0%
b) Even in low CO2 concentration
50%
c) Both (A) and (B)
50%
d) Only in high intensity of light and high CO2
Q.16.
Which of the following is correct for chlorophyll of cyanobacteria ?
100%
a) Chl a = C55H70O6N4 Mg
0%
b) Chl a = C55H72O5N4 Mg
0%
c) Chl b = C55H72O6N4 Mg
0%
d) Xanthophyll = C40H56
Q.17.
The non-polar part of chlorophyll is
0%
a) phytol
100%
b) porphyrin
0%
c) pyrrol
0%
d) none above
Q.18.
Chloroplast has maximum quantity of....in stroma
0%
a) dehydrogenase
100%
b) RuBP carboxylase
0%
c) pyruvic carboxylase
0%
d) hexokinase
Q.19.
Maximum photosynthesis occurs in which of these lights ?
50%
a) Red
50%
b) Green
0%
c) Very high light
0%
d) Continuous bright light
Q.20.
The requirement of assimilatory power to fix 6 molecules of CO2 is
0%
a) 6 ATP, 6 NADPH
80%
b) 12 ATP, 18 NADPH
0%
c) 18 ATP, 18 NADPH
20%
d) 18 ATP, 12 NADPH
Q.21.
Non-cycle photosphorylation is the main photochemical reaction in green plants because
0%
a) it produces assimilatory power and oxygen
100%
b) it initiates photolysis of water of productions of oxygen
0%
c) it utilizes more energy for oxygen production.
0%
d) there is no other cycle available.
Q.22.
In an experiment demonstrating the evolution of oxygen in Hydrilla, Sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favourable ?
0%
a) Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate.
0%
b) Amount of oxygen evolved increases as the avilability of carbon dioxide increases
0%
c) Amount of oxygen evolved decreases as the avilability of carbon dioxide increases
0%
d) Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate
Q.23.
Dicot which follow C4 pathway is____.
0%
a) wheat
100%
b) Amranthus
0%
c) Maize
0%
d) Mango
Q.24.
C55H70O6N4 Mg is
0%
a) An accessory pigment in photosynthesis
0%
b) Present in PS-II
0%
c) Present in all green plants
0%
d) All of these
Q.25.
For synthesis of one molecule of glucose, the requirement of ATP and NADPH2 is respectively
0%
a) 15 and 10
0%
b) 12 and 8
0%
c) 30 and 15
100%
d) 18 and 12
Q.26.
A plant is kept in 300 ppm CO2 concentration. What will happen to it
0%
a) Plant will die soon
50%
b) Plant will grow but will not die
50%
c) Plant will show normal photosynthesis
0%
d) Respiration will be greatly decreased
Q.27.
Photorespiration in C3 plants starts from.
0%
a) phosphoglycerate
0%
b) phosphosglycolate
100%
c) glycerate
0%
d) glycine
Q.28.
It is estimated that about 85% of the earth’s photosynthetic activity is carried out by
0%
a) trees
0%
b) savannas
100%
c) phytoplanktons
0%
d) herbaceous plants
Q.29.
Glycolytic reversal is a part of ______.
100%
a) aerobic respiration
0%
b) anaerobic respiration
0%
c) light phase of photosynthesis
0%
d) dark phase of photosynthesis
Q.30.
The oxygen molecule in glucose formed during photosynthesis comes from
100%
a) Water
0%
b) CO2
0%
c) atmosphere
0%
d) Organic acids
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