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Free download in PDF Bioenergetics Short Questions & Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
Stomata cover only _________ of leaf surface.
[A]
0.03 - 0.04%
[B]
10%
[C]
1-2 %
[D]
50%
42
Photosynthesis carried out by terrestrial plants is ____ of total photosynthesis.
[A]
1-2%
[B]
5%
[C]
10%
[D]
20%
43
Of the following, which one causes higher production of food in green plants
[A]
Blue
[B]
Orange
[C]
Red
[D]
Violet
44
First Actions spectrum was obtained by using
[A]
Algae
[B]
Fungi
[C]
Bacteria
[D]
Spirogyra
45
The first action spectrum was obtained by
[A]
T.W.Englemam
[B]
Malleus
[C]
T.W.Inws
[D]
W.Stapes
46
The percentage of light absorbed by the leaf
[A]
20%
[B]
15%
[C]
10%
[D]
1%
47
PS I has chlorophyll a molecule which absorbs maximum light of _____ nm.
[A]
600
[B]
650
[C]
680
[D]
700
48
Air contains ______ % of CO2
[A]
0.02-0.03
[B]
0.03-0.04
[C]
0.04-0.05
[D]
0.05-0.06
49
About _______ % of photosynthesis is carried by terrestrial plants, while rest occurs in ocean, lakes, and ponds.
[A]
10%
[B]
20%
[C]
30%
[D]
40%
50
Carotenoids perform protective function in
[A]
Animals
[B]
Plants
[C]
Both of these
[D]
None of these
51
Molecular formula of chlorophyll b is
[A]
C55 H10 O4 N6 Mg
[B]
C55 H70 O6 N5 Mg
[C]
C55 H71 O6 N4 Mg
[D]
C55 H70 O6 N4 Mg
52
Bacteriochlorophylls does not include
[A]
Chlorophyll e
[B]
Chlorophyll d
[C]
Chlorophyll a
[D]
Chlorophyll c
53
The most important photosynthetic pigment
[A]
Chlorophyll a
[B]
Chlorophyll b
[C]
Xanthophyll
[D]
Carotenes
54
The chlorophyll molecule is embedded in the core of thylakoid membrane which acts as
[A]
Hydrophilic
[B]
Hydrophobic
[C]
Both of these
[D]
None of these
55
Deficiency of ________ causes yellowing in plants
[A]
Magnesium
[B]
Iron
[C]
Chlorine
[D]
Oxygen
56
Chlorophylls mainly absorb ____ wavelengths
[A]
Orange - blue
[B]
Violet - red
[C]
Yellow - orange
[D]
Orange - red.
57
Xanthophylls are ______ pigments
[A]
Yellow
[B]
Red
[C]
Orange
[D]
Green
58
Chlorophylls are found embedded in the ______ membranes
[A]
Stroma
[B]
Grana
[C]
Thylakoid
[D]
Intergrana
59
The dense fluid filled region in the chloroplast is
[A]
Grana
[B]
Stroma
[C]
Thylakoid
[D]
None of these
60
In all plants the major sites of phosynthesis are
[A]
Leaves respire and utilize O2 and release CO2.
[B]
Stems
[C]
Roots
[D]
Branches
Answer: Leaves respire and utilize O2 and release CO2.
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