31.
The accepted size of chlorophyll molecule is
A
Head : 15 × 10 A° & Tail ; 25A°
B
Head : 20 × 20 A° & Tail ; 25A°
C
Head : 10 × 10 A° & Tail : 15A°
D
Head : 15 × 15 A° & Tail : 20A°
Answer :
Head : 15 × 15 A° & Tail : 20A°
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32.
During photosynthesis, oxygen is evolved from
A
H2S
B
H2O
C
CO2 PHOTOSYNTHETIC PPARATUS,
D
HCO3
Answer :
H2O
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33.
The rate of photosynthesis decreases if the wavelength of visible light exceeds 680 nm. This was shown by which scientist & what is it reason
A
Black man - Law of limiting factors
B
Calving & Benson - Photoxidation
C
Emerson & Arnold - Red drop
D
Ruben & Kamen - Photolysis
Answer :
Emerson & Arnold - Red drop
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34.
Isotopes employed to study the process of ] photosynthesis reaction
A
S35 and P32
B
C14 and O18
C
N14 and Co60
D
N14 and O18
Answer :
C14 and O18
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35.
$${C_4}$$-cycle was discovered by
A
Hatch and Slack
B
Calvin
C
Hill
D
Arnon
Answer :
Hatch and Slack
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36.
At the time of ionization of H2O, which initially captures the electron
A
Chlorophyll
B
NADP
C
OH-
D
Cytochrome
Answer :
Chlorophyll
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37.
It is only the green part of the plant, which takes part in
A
Respiration
B
Transpiration
C
Photosynthesis
D
Osmosis
Answer :
Photosynthesis
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38.
The significance of light & chlorophyll in photosynthesis was discovered by
A
Priestely
B
Ingenhousz
C
Englemann
D
Blackman
Answer :
Ingenhousz
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39.
In photosystem-1the first electron acceptor is
A
Cytochrome
B
Plastocyanin
C
An iron-sulphur protein
D
Ferredoxin
Answer :
An iron-sulphur protein
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40.
Photosynthetic bacteria differ from green plants in
A
Nature of their pigments
B
Type of electron donor
C
Photosynthetic process being non oxygenic
D
All of the above
Answer :
All of the above
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