CBSE Class 11 Biology Photosynthesis in Higher Plants MCQs Set A

Question : Quantasomes are present in
a) chloroplast
b) golgi body
c) lysosome
d) None of these
Answer : A

Question : Photorespiration is favoured by
a) high O₂ and low CO₂
b) low light and high O₂
c) low temperature and high O₂
d) None of these
Answer : A

Question : The organelles which take part in photo-respiration are
a) mitochondria, chloroplast, peroxisome
b) mitochondria, lysosomes, peroxisome
c) chloroplast, mitochondria, lysosome
d) chloroplast, mitochondria, nucleus
Answer : A

Question : Grana are present inside the
a) chloroplast
b) ribosome
c) mitochondria
d) endoplasmic reticulum
Answer : A

Question : Photosynthetically active radiation is represented by the range of wavelength of
a) 400 - 700 nm
b) 400 - 950 nm
c) 340 - 450 nm
d) 500 - 600 nm
Answer : A

Question : Which of the following statement is incorrect ?
a) C₃ plants respond to higher temperature, show higher photosynthetic rate while C₄ plants have lower optimum temperature
b) Tropical plants have higher temperature optimum than the plants adapted to temperate climate.
c) The effect of water as a factor is more through its effect on plant, rather than directly on photosynthesis
d) Light reaction is less temperature sensitive than dark reaction.
Answer : A

Question : Chemiosmotic hypothesis given by Peter Mitchell proposes the mechanism of
a) synthesis of ATP
b) synthesis of NADH
c) synthesis of NADPH
d) None of these
Answer : A

Question : RuBisCO stands for
a) Ribulose Biphosphate Carboxylase Oxygenase
b) Ribulose Phosphate Carboxylase Oxygenase
c) Ribulose Phosphate Carboxylic Oxygenase
d) None of the above
Answer : A

Question : Which enzyme is most abundantly found on earth?
a) RuBisCo
b) Nitrogenase
c) Invertase
d) Catalase
Answer : A

Question : The first carbon dioxide acceptor in C₄-plants is
a) Phosphoenol-pyruvate
b) Ribulose 1, 5-diphosphate
c) Oxalo-acetic acid
d) None of these
Answer : B

Question : Which element is required in the germination of pollen grain?a) Boron
b) Chlorine
c) Potassium
d) Calcium
Answer : A

Question : In a CAM plant, the concentration of organic acid
a) increases during night
b) decreases or increases during day
c) decreases during the day
d) increases during the day.
Answer : A

Question : Which of the following statements regarding photorespiration are true?
a) All of the above
b) Photorespiration results in a loss of usable carbon dioxide
c) Photorespiration is a metabolically expensive pathway
d) Photorespiration is avoided when CO2 is abundant
Answer : A

Question : When a photosynthetic plant is transferred to an atmosphere of enriched O2, its rate of
a) photosynthesis would decrease.
b) respiration would decrease
c) osmosis would increase
d) None of these
Answer : C

Question : In C4 plants, agranal chloroplasts are found in
a) bundle sheath cells
b) chloroplasts of guard cells
c) epidermal cell chloroplasts of green stem
d) mesophyll cells
Answer : A

Question : Photorespiration is favoured by
a) high O2 and low CO2
b) low light and high O2
c) low temperature and high O2
d) None of these
Answer : A

Question : In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of
a) mesophyll
b) phloem
c) epidermis
d) bundle sheath
Answer : A

Question : In photosystem-I the first electron acceptor is
a) an iron-sulphur protein
b) cytochrome
c) plastocyanin
d) ferredoxin
Answer : A

Question : Which one of the following pigment does not occur in the chloroplast?
a) Anthocyanin
b) Xanthophyll
c) Carotene
d) Chlorophyll 'b'
Answer : A

Question : Which pigment is water soluble?
a) Anthocyanin
b) Chlorophyll
c) Carotene
d) Xanthophyll
Answer : B