Photosynthesis 90 Questions
Photosynthesis 90 Questions
Photosynthesis 90 Questions
IN HIGHER PLANTS
A
B
C
a) A - Grana, B - Thylakoid, C - Stroma
b) A - Grana, B - Stroma, C - Starch granule
c) A - Grana, B - Stroma, C - Mitochondria
d) A - Grana, B - Peroxisome, C - Stroma
76. In photosynthesis, plants
a) Absorb O₂ and release CO₂
b) Absorb CO₂ and release O₂
c) Absorb NH₃ and release N₂
d) Absorb N₂ and release NH₃
77. In photosynthesis, energy from light reaction to dark reaction is
transferred in the form of
a) ADP
b) ATP
c) RuDP
d) Chlorophyll
78. The synthesis of ATP in photosynthesis and respiration is essentially
an oxidation-reduction process involving removal of energy from
a) Oxygen
b) Phytochrome
c) Cytochrome
d) Electrons
79. Chemosynthesis and photosynthesis are alike in that both
a) are associated with heterotroph
b) require sunlight as an energy source
c) are methods of autotrophic nutrition
d) occur in tracheophytes
80. The most vital process for the existence of life on earth is
a) Communication in animals
b) Photosynthesis by plants
c) Reproduction in plants and animals
d) Respiration in animals
81. How many molecules of water are needed by a green plant to
produce one molecule of hexose?
a) 9
b) 12
c) 24
d) One only
82. Solar energy is converted into chemical energy in the presence of
a) Mitochondria
b) Chloroplasts
c) Ribosomes
d) Peroxisomes
83. Two plants A and B are supplied H₂O and CO₂ with H₂O¹⁸ and
CO₂¹⁸ respectively. Which of the following plant releases O¹⁸ type
oxygen in photosynthesis?
a) A plant
b) B plant
c) Both (a) and (b)
d) First (a) and then (b)
84. Which of the followinf is formed durinf Z scheme of
photosynthesis?
a) STP
b) O₂
c) NADPH₂
85. Select the incorrect pair.
a) 2-carbon compound - Aspartic acid
b) 3-carbon compound - PGA
c) 4-carbon compound - Malic acid
d) 5-carbon compound - RuBP
86. Identify the correct sequence of stages of Calvin cycle.
a) Reduction → Carboxylation → Regeneration
b) Carboxylation → Regeneration → Reduction
c) Carboxylation → Reduction → Regeneration
d) Reduction → Regeneration → Carboxylation
87. How many ATP and NADH₂ are produced in the process of
photophosphorylation respectively?
a) 2 and 4
b) 1 and 2
c) 4 and 6
d) 0 and 0
88. The factor that is not limiting in normal conditions for
photosynthesis is
a) water
b) chlorophyll
c) light
d) CO₂
89. Breakdown of proton gradient developed during chemiosmosis
leads to the release of
a) oxygen
b) water
c) energy
d) protons
90. Quality of light refers to
a) intensity of light
b) frequency of light
c) wavelength of light
d) duration of light
ANSWERS