The rate of photosynthesis is controlled by
  • the rate of light reaction
  • the rate of dark reaction
  • the rates of both light and dark reactions
  • none of the above
The end product of the Calvin cycle is ______.
  • RuBP
  • PGAL
  • PGA
  • ADP + NADP
The primary carbon dioxide acceptor in C4 cycle is
  • malic acid
  • phosphoenol pyruvate
  • rubisco
  • aspartic acid
The law of limiting factor was given by
  • Calvin
  • Blackman
  • Priestley
  • None of these
The metabolic pathway which produces carbohydrate is
  • Calvin cycle
  • Glycolysis
  • Cyclic electron pathway
  • Krebs cycle
Manganese is required in
  • Chlorophyll synthesis
  • Nucleic acid synthesis
  • Plant cell wall formation
  • Photolysis of water during photosynthesis
Oxidative phosphorylation refers to
  • Anaerobic production of ATP
  • The citric acid cycle production of ATP
  • Production of ATP by chemiosmosis
  • Alcoholic fermentation
Which of the following is not an accessory pigment?
  • Carotene
  • Chlorophyll a
  • Chlorophyll b
  • Xanthophyll
Besides water and CO
  • light
  • oxygen
  • NAD
  • mineral salt
In actively gro – wing young plants, the best data for estimating the rate of photosynthesis would be
  • ratio of oxygen evolved to carbon dioxide absorbed
  • increase in fresh weight
  • increase in dry weight
  • increase in carbohydrate
Discovery of Emerson effect has already shown the
  • two distinct photochemical reactions
  • light and dark reactions of photosynthesis
  • photophosphorylation
  • photorespiration
Translocation of sugar in flowering plants occurs in the form of
  • glucose
  • sucrose
  • starch
  • maltose
Where are thylakoids and grana located?
  • Lysosomes
  • Mitochondria
  • Chloroplasts
  • Golgi apparatus
Who enunciated the law of limiting factor for photosynthesis?
  • Robert Emerson
  • Ruben
  • Blackman
  • Calvin
Which one of the following statement is true for ATP?
  • ATP is prosthetic part of an enzyme
  • ATP is an enzyme
  • ATP is organic ions of enzyme
  • ATP is a Co-enzyme
Kranz anatomy is a feature of
  • C3 plants
  • CAM plants
  • C4 plants
  • All of these
Which of the following is a 4-carbon compound?
  • Oxaloacetic acid
  • Phosphoglyceric acid
  • Ribulose biphosphate
  • Phosphoenolpyruvate
Which of the following process (C4 cycle) occurs in bundle sheath cells?
  • Regeneration
  • Fixation
  • Carboxylation
  • Decarboxylation
Light reactions of photosynthesis occurs in
  • stroma
  • thylakoid
  • grana
  • cytoplasm of cell
Water stress causes
  • opening of stomata
  • increase in metabolic rate
  • wilting of leaves
  • lesser availability of carbon dioxide
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