71.
C2 and C3 cycles predominantly operates in
A
Cytoplasm and mitochondria
B
Mitochondria and peroxysome
C
Peroxisome and stroma
D
Stroma and grana of a chloroplast
Answer :
Peroxisome and stroma
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72.
Percentage of chlorophyll in a normal chloroplast
A
5 - 10%
B
40 - 50%
C
65 - 75%
D
90 - 95%
Answer :
5 - 10%
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73.
Photorespiration does not occurs in
A
C-4 plants
B
C-3 plants
C
C-2 plants
D
None of the above
Answer :
C-4 plants
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74.
At the compensation point there will not be
A
Any photosynthesis
B
Any gaseous exchange between the plant and its environment
C
Any respiration in plants
D
Loss in weight of the plant in dark
Answer :
Any gaseous exchange between the plant and its environment
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75.
Universal photosynthetic chlorophyll is
A
Chl-'a'
B
Chl 'b'
C
Chl - 'c'
D
Chl - 'e'
Answer :
Chl-'a'
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76.
Which of the following is the site of photolysis of ] water
A
Stroma of chloroplast
B
Cristae of chloroplast
C
Ribosome of chloroplast
D
Lumen of thylakiod sacs
Answer :
Lumen of thylakiod sacs
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77.
Which of the following photosynthetic bacteria have both PS-I & PS-II
A
Purple sulphur bacteria
B
Cyanobacteria
C
Purple non sulphur bacteria
D
Green sulphur bacteria
Answer :
Cyanobacteria
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78.
Drocera is photosynthetic plant but still captures insects why
A
Grown in N2 rich soil
B
Grown in N2 deficient soil.
C
It is connecting plant between plants and animals
D
Incests helps in its pollination
Answer :
Grown in N2 deficient soil.
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79.
The C4 plants are phtosynthetically more efficient than C3 plants because
A
The CO2 efflux is not prevented
B
They have more chloroplasts
C
The CO2 compensation point is more
D
CO2 generated during photorespiration is trapped and recycled through PEP carboxylase
Answer :
They have more chloroplasts
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80.
Photosynthesis is mainly responsible for the existence of
A
Animals of this earth
B
Plants on this earth
C
Both plants and animals
D
None of the above
Answer :
Both plants and animals
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