Q.1
In chlorophyll structure four pyrole rings are united with Mg by their atoms of
  • a) N
  • b) C
  • c) H
  • d) O
Q.2
Dimorphic chloroplast are present in ______.
  • a) zea mays
  • b) sacchrum officinale
  • c) sorghum bicolor
  • d) all of these
Q.3
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
Q.4
Loculus is the internal space of
  • a) Grana
  • b) Stroma
  • c) Thylakoid
  • d) Quantasome
Q.5
85-90% (9/10) of all photosynthesis in the world is carried out by
  • a) Shrubs
  • b) Algae of the oceans
  • c) Herbs
  • d) Scientists in the laboratory
Q.6
Q10 is
  • a) respiratory coefficients
  • b) photosynthetic coefficient
  • c) photosynthetic yield
  • d) temperature coeffiecient
Q.7
Hill reaction takes place
  • a) in the absence of CO2
  • b) in the presence of carbon dioxide
  • c) in the absence of a suitable electron acceptor
  • d) none above
Q.8
Choose the correct statement
  • a) Chl a is blue green pigment with formula C55H70O6N4Mg
  • b) Chl a is blue green pigment with formula C55H72O5N4Mg
  • c) Chl b is yellow green pigment with formula C55H70O5N4Mg
  • d) Xanthophyll is pigment with formula C40H60
Q.9
Stomata of CAM plants
  • a) are always open
  • b) open during the day and close at right.
  • c) open during the night and close during the day.
  • d) never open
Q.10
The reduction of ADP to ATP occurs by
  • a) oxidation of water
  • b) high conc. of H+ ions across the membrane
  • c) oxidation of NADPH
  • d) release of electron from PS-II to PS-I
Q.11
The visible product of photosynthesis is ______.
  • a) glucose
  • b) cellulose
  • c) starch
  • d) fructose
Q.12
Temperature is very high but a plant is showing photosynthesis with normal rate, probably it would be
  • a) C3 plant
  • b) Mango plant
  • c) Pea plant
  • d) Sugarcane plant
Q.13
Chlorophyll-a differes from chlorophyll-b in having—
  • a) Methly group instead of aldehyde group
  • b) Aldehyde group instead of methyl group
  • c) Methyl group instead of ethyl group
  • d) Only phytol tail instead of head
Q.14
The numbner of photons needed for the evolution of one molecule of oxygen is
  • a) 8
  • b) 2
  • c) 12
  • d) 18
Q.15
C4 plants can perform photosynthesis
  • a) Even in low light intensity
  • b) Even in low CO2 concentration
  • c) Both (A) and (B)
  • d) Only in high intensity of light and high CO2
Q.16
Which of the following is correct for chlorophyll of cyanobacteria ?
  • a) Chl a = C55H70O6N4 Mg
  • b) Chl a = C55H72O5N4 Mg
  • c) Chl b = C55H72O6N4 Mg
  • d) Xanthophyll = C40H56
Q.17
The non-polar part of chlorophyll is
  • a) phytol
  • b) porphyrin
  • c) pyrrol
  • d) none above
Q.18
Chloroplast has maximum quantity of....in stroma
  • a) dehydrogenase
  • b) RuBP carboxylase
  • c) pyruvic carboxylase
  • d) hexokinase
Q.19
Maximum photosynthesis occurs in which of these lights ?
  • a) Red
  • b) Green
  • c) Very high light
  • d) Continuous bright light
Q.20
The requirement of assimilatory power to fix 6 molecules of CO2 is
  • a) 6 ATP, 6 NADPH
  • b) 12 ATP, 18 NADPH
  • c) 18 ATP, 18 NADPH
  • d) 18 ATP, 12 NADPH
Q.21
Non-cycle photosphorylation is the main photochemical reaction in green plants because
  • a) it produces assimilatory power and oxygen
  • b) it initiates photolysis of water of productions of oxygen
  • c) it utilizes more energy for oxygen production.
  • 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 ?
  • a) Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate.
  • b) Amount of oxygen evolved increases as the avilability of carbon dioxide increases
  • c) Amount of oxygen evolved decreases as the avilability of carbon dioxide increases
  • d) Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate
Q.23
Dicot which follow C4 pathway is____.
  • a) wheat
  • b) Amranthus
  • c) Maize
  • d) Mango
Q.24
C55H70O6N4 Mg is
  • a) An accessory pigment in photosynthesis
  • b) Present in PS-II
  • c) Present in all green plants
  • d) All of these
Q.25
For synthesis of one molecule of glucose, the requirement of ATP and NADPH2 is respectively
  • a) 15 and 10
  • b) 12 and 8
  • c) 30 and 15
  • d) 18 and 12
Q.26
A plant is kept in 300 ppm CO2 concentration. What will happen to it
  • a) Plant will die soon
  • b) Plant will grow but will not die
  • c) Plant will show normal photosynthesis
  • d) Respiration will be greatly decreased
Q.27
Photorespiration in C3 plants starts from.
  • a) phosphoglycerate
  • b) phosphosglycolate
  • c) glycerate
  • d) glycine
Q.28
It is estimated that about 85% of the earth’s photosynthetic activity is carried out by
  • a) trees
  • b) savannas
  • c) phytoplanktons
  • d) herbaceous plants
Q.29
Glycolytic reversal is a part of ______.
  • a) aerobic respiration
  • b) anaerobic respiration
  • c) light phase of photosynthesis
  • d) dark phase of photosynthesis
Q.30
The oxygen molecule in glucose formed during photosynthesis comes from
  • a) Water
  • b) CO2
  • c) atmosphere
  • d) Organic acids
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