Cellular Respiration and Photosynthesis NDA Questions

NDA BIOLOGY

Cellular Respiration and Photosynthesis MCQ Questions


1.
Photosynthesis is a physico-chemical process by which green plants synthesize organic compounds using:
A.
Chemical energy and Nâ‚‚
B.
Heat energy and Oâ‚‚
C.
Light energy and COâ‚‚
D.
Kinetic energy and Hâ‚‚
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ANSWER :
C. Light energy and COâ‚‚
2.
The primary site of photosynthesis in higher plants is:
A.
Mitochondria
B.
Ribosome
C.
Chloroplast
D.
Nucleus
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ANSWER :
C. Chloroplast
3.
Which pigment is called the primary photosynthetic pigment?
A.
Carotenoids
B.
Xanthophylls
C.
Chlorophyll b
D.
Chlorophyll a
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ANSWER :
D. Chlorophyll a
4.
The colour of chlorophyll a is:
A.
Blue-green
B.
Yellow-green
C.
Orange
D.
Red-brown
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ANSWER :
A. Blue-green
5.
Carotenoids are accessory photosynthetic pigments that absorb light mainly in the:
A.
Green and yellow wavelengths
B.
Red and orange wavelengths
C.
Infrared wavelengths
D.
Blue and violet wavelengths
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ANSWER :
D. Blue and violet wavelengths
6.
Joseph Priestley in 1770 demonstrated that plants:
A.
Produce glucose from sunlight alone
B.
Restore oxygen to air that has been 'damaged' by burning or breathing
C.
Release oxygen only during night
D.
Absorb carbon dioxide only in darkness
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ANSWER :
B. Restore oxygen to air that has been 'damaged' by burning or breathing