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Neet Botany Photosynthesis Mcq
Quiz 11
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Q.1
In chlorophyll structure four pyrole rings are united with Mg by their atoms of
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a) N
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b) C
0%
c) H
0%
d) O
Explanation
Answer:(a)
Q.2
Dimorphic chloroplast are present in ______.
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a) zea mays
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b) sacchrum officinale
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c) sorghum bicolor
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d) all of these
Explanation
Answer:(d)
Q.3
During light phase of photosynthesis ______ is oxidized and ______ is reduced.
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a) CO2 and Water
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b) Water and CO2
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c) Water and NADP
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d) NADPH2 and CO2
Explanation
Answer:(c)
Q.4
Loculus is the internal space of
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a) Grana
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b) Stroma
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c) Thylakoid
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d) Quantasome
Explanation
Answer:(c)
Q.5
85-90% (9/10) of all photosynthesis in the world is carried out by
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a) Shrubs
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b) Algae of the oceans
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c) Herbs
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d) Scientists in the laboratory
Explanation
Answer:(b)
Q.6
Q10 is
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a) respiratory coefficients
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b) photosynthetic coefficient
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c) photosynthetic yield
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d) temperature coeffiecient
Explanation
Answer:(d)
Q.7
Hill reaction takes place
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a) in the absence of CO2
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b) in the presence of carbon dioxide
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c) in the absence of a suitable electron acceptor
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d) none above
Explanation
Answer:(d)
Q.8
Choose the correct statement
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a) Chl a is blue green pigment with formula C55H70O6N4Mg
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b) Chl a is blue green pigment with formula C55H72O5N4Mg
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c) Chl b is yellow green pigment with formula C55H70O5N4Mg
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d) Xanthophyll is pigment with formula C40H60
Explanation
Answer:(b)
Q.9
Stomata of CAM plants
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a) are always open
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b) open during the day and close at right.
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c) open during the night and close during the day.
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d) never open
Explanation
Answer:(c)
Q.10
The reduction of ADP to ATP occurs by
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a) oxidation of water
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b) high conc. of H+ ions across the membrane
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c) oxidation of NADPH
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d) release of electron from PS-II to PS-I
Explanation
Answer:(b)
Q.11
The visible product of photosynthesis is ______.
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a) glucose
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b) cellulose
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c) starch
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d) fructose
Explanation
Answer:(c)
Q.12
Temperature is very high but a plant is showing photosynthesis with normal rate, probably it would be
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a) C3 plant
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b) Mango plant
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c) Pea plant
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d) Sugarcane plant
Explanation
Answer:(d)
Q.13
Chlorophyll-a differes from chlorophyll-b in having—
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a) Methly group instead of aldehyde group
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b) Aldehyde group instead of methyl group
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c) Methyl group instead of ethyl group
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d) Only phytol tail instead of head
Explanation
Answer:(a)
Q.14
The numbner of photons needed for the evolution of one molecule of oxygen is
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a) 8
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b) 2
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c) 12
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d) 18
Explanation
Answer:(a)
Q.15
C4 plants can perform photosynthesis
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a) Even in low light intensity
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b) Even in low CO2 concentration
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c) Both (A) and (B)
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d) Only in high intensity of light and high CO2
Explanation
Answer:(b)
Q.16
Which of the following is correct for chlorophyll of cyanobacteria ?
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a) Chl a = C55H70O6N4 Mg
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b) Chl a = C55H72O5N4 Mg
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c) Chl b = C55H72O6N4 Mg
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d) Xanthophyll = C40H56
Explanation
Answer:(b)
Q.17
The non-polar part of chlorophyll is
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a) phytol
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b) porphyrin
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c) pyrrol
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d) none above
Explanation
Answer:(a)
Q.18
Chloroplast has maximum quantity of....in stroma
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a) dehydrogenase
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b) RuBP carboxylase
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c) pyruvic carboxylase
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d) hexokinase
Explanation
Answer:(b)
Q.19
Maximum photosynthesis occurs in which of these lights ?
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a) Red
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b) Green
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c) Very high light
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d) Continuous bright light
Explanation
Answer:(a)
Q.20
The requirement of assimilatory power to fix 6 molecules of CO2 is
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a) 6 ATP, 6 NADPH
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b) 12 ATP, 18 NADPH
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c) 18 ATP, 18 NADPH
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d) 18 ATP, 12 NADPH
Explanation
Answer:(d)
Q.21
Non-cycle photosphorylation is the main photochemical reaction in green plants because
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a) it produces assimilatory power and oxygen
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b) it initiates photolysis of water of productions of oxygen
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c) it utilizes more energy for oxygen production.
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d) there is no other cycle available.
Explanation
Answer:(a)
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 ?
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a) Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate.
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b) Amount of oxygen evolved increases as the avilability of carbon dioxide increases
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c) Amount of oxygen evolved decreases as the avilability of carbon dioxide increases
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d) Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate
Explanation
Answer:(d)
Q.23
Dicot which follow C4 pathway is____.
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a) wheat
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b) Amranthus
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c) Maize
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d) Mango
Explanation
Answer:(b)
Q.24
C55H70O6N4 Mg is
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a) An accessory pigment in photosynthesis
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b) Present in PS-II
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c) Present in all green plants
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d) All of these
Explanation
Answer:(d)
Q.25
For synthesis of one molecule of glucose, the requirement of ATP and NADPH2 is respectively
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a) 15 and 10
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b) 12 and 8
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c) 30 and 15
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d) 18 and 12
Explanation
Answer:(d)
Q.26
A plant is kept in 300 ppm CO2 concentration. What will happen to it
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a) Plant will die soon
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b) Plant will grow but will not die
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c) Plant will show normal photosynthesis
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d) Respiration will be greatly decreased
Explanation
Answer:(c)
Q.27
Photorespiration in C3 plants starts from.
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a) phosphoglycerate
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b) phosphosglycolate
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c) glycerate
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d) glycine
Explanation
Answer:(b)
Q.28
It is estimated that about 85% of the earth’s photosynthetic activity is carried out by
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a) trees
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b) savannas
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c) phytoplanktons
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d) herbaceous plants
Explanation
Answer:(c)
Q.29
Glycolytic reversal is a part of ______.
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a) aerobic respiration
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b) anaerobic respiration
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c) light phase of photosynthesis
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d) dark phase of photosynthesis
Explanation
Answer:(d)
Q.30
The oxygen molecule in glucose formed during photosynthesis comes from
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a) Water
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b) CO2
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c) atmosphere
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d) Organic acids
Explanation
Answer:(b)
0 h : 0 m : 1 s
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