Photosynthesis (Photosynthesis as a means of Autotrophic Nutrition; Site of Photosynthesis take place; Pigments involved in Photosynthesis (Elementary idea); Photochemical and Biosynthetic Phases of Photosynthesis; Cyclic and Non Cyclic and Photophosphorylation...) NEET Questions

Biology - Plant Physiology

Photosynthesis (Photosynthesis as a means of Autotrophic Nutrition; Site of Photosynthesis take place; Pigments involved in Photosynthesis (Elementary idea); Photochemical and Biosynthetic Phases of Photosynthesis; Cyclic and Non Cyclic and Photophosphorylation...) MCQ Questions


1.
Photosynthesis is best described as a:
A.
Purely chemical process
B.
Physico-chemical process
C.
Biological catabolic process
D.
Purely physical process
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ANSWER :
B. Physico-chemical process
2.
Green plants are called autotrophs because they:
A.
Depend on other plants for food
B.
Absorb readymade food from soil
C.
Eat decomposing organic matter
D.
Synthesise their own food using light energy
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ANSWER :
D. Synthesise their own food using light energy
3.
Photosynthesis is important for life on earth primarily because it:
A.
Is the primary source of food and releases O2
B.
Produces fossil fuels directly
C.
Removes water from soil
D.
Removes nitrogen from atmosphere
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ANSWER :
A. Is the primary source of food and releases O2
4.
All living forms on earth ultimately depend on which energy source?
A.
Geothermal energy
B.
Sunlight
C.
Tidal energy
D.
Wind energy
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ANSWER :
B. Sunlight
5.
Which experiment proves that chlorophyll is essential for photosynthesis?
A.
Mohl's half-leaf experiment
B.
Half-leaf experiment with KOH
C.
Variegated leaf experiment with starch test
D.
Ganong's potometer experiment
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ANSWER :
C. Variegated leaf experiment with starch test
6.
Which experiment demonstrates that CO2 is necessary for photosynthesis?
A.
Variegated leaf experiment
B.
Half-leaf experiment with KOH-soaked cotton
C.
Sachs' iodine test
D.
Engelmann's prism experiment
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ANSWER :
B. Half-leaf experiment with KOH-soaked cotton