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MEDIUM
ENGLISH
Biology
The percentage of light absorbed by the leaf is ___________?
A
20%
Option A
B
15%
Option B
C
10%
Option C
D
1%
Option D
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MEDIUM
ENGLISH
Biology
Which of the following light is least absorbed by the plants?
A
Orange
Option A
B
Red
Option B
C
Blue
Option C
D
Green
Option D
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MEDIUM
ENGLISH
Biology
The first action spectrum was obtained by___________?
A
T.W.Englemam
Option A
B
Malleus
Option B
C
T.W.Inws
Option C
D
W.Stapes
Option D
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MEDIUM
ENGLISH
Biology
Which of the light is mainly absorbed by the plants?
A
Orange
Option A
B
Red
Option B
C
Green
Option C
D
Both A and B
Option D
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MEDIUM
ENGLISH
Biology
First Actions spectrum was obtained by using__________?
A
Algae
Option A
B
Fungi
Option B
C
Bacteria
Option C
D
Spirogyra
Option D
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MEDIUM
ENGLISH
Biology
Chlorophyll is insoluble in_____________?
A
Carbon tetrachloride
Option A
B
Alcohol
Option B
C
Organic solvents
Option C
D
Water
Option D
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MEDIUM
ENGLISH
Biology
Of the following, which one causes higher production of food in green plants?
A
Blue
Option A
B
Orange
Option B
C
Red
Option C
D
Violet
Option D
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MEDIUM
ENGLISH
Biology
Which of the following statement about the head of a chlorophyll molecule is incorrect?
A
It is a porphyrin ring or tetrapyrrole ring structure
Option A
B
It is flat, square and light absorbing
Option B
C
Composed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen.
Option C
D
It is hydrophobic
Option D
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MEDIUM
ENGLISH
Biology
Photosynthesis carried out by terrestrial plants is _________ of total photosynthesis?
A
1-2%
Option A
B
5%
Option B
C
10%
Option C
D
20%
Option D
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MEDIUM
ENGLISH
Biology
Molecular formula of chlorophyll ‘a’ molecule is___________?
A
C55H72O5N4Mg
Option A
B
C55H70O6N4Mg
Option B
C
C50H72O6N4Mg
Option C
D
C55H70O5N4Mg
Option D
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MEDIUM
ENGLISH
Biology
Stomata cover only ______________ of leaf surface?
A
0.03 – 0.04%
Option A
B
10%
Option B
C
1-2 %
Option C
D
50%
Option D
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MEDIUM
ENGLISH
Biology
Which of the following pigment is Blue- green in colour?
A
Chlorophyll a
Option A
B
Chlorophyll b.
Option B
C
Chlorophyll c
Option C
D
Chlorophyll d.
Option D
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MEDIUM
ENGLISH
Biology
Reduction in photosynthesis is of____________?
A
O2
Option A
B
CO2
Option B
C
H2O
Option C
D
light energy
Option D
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MEDIUM
ENGLISH
Biology
Light reaction takes place on/in____________?
A
Thylakoid
Option A
B
Storma
Option B
C
Chloroplast
Option C
D
Grana
Option D
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MEDIUM
ENGLISH
Biology
NADPH2 provides___________?
A
assimilatory power
Option A
B
chemical energy
Option B
C
energized electrons
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Biology
Thylakoids in chloroplasts are stacked into___________?
A
Grana
Option A
B
Stroma
Option B
C
Nucleus
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Biology
Of the following, which one light – gathering?
A
Antenna complex
Option A
B
Reaction centre
Option B
C
Photosystem
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Biology
In all plants the major sites of phosynthesis are___________?
A
Leaves respire and utilize O2 and release CO2.
Option A
B
Stems
Option B
C
Roots
Option C
D
Branches
Option D
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MEDIUM
ENGLISH
Biology
Photosystem II has molecules which absorbs maximum light of___________?
A
680 nm
Option A
B
100 m
Option B
C
700 nm
Option C
D
670 nm
Option D
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MEDIUM
ENGLISH
Biology
The dense fluid filled region in the chloroplast is____________?
A
Grana
Option A
B
Stroma
Option B
C
Thylakoid
Option C
D
None of these
Option D
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