Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Photosynthesis in Higher Plants question

2005 · Q2
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Biology
  4. /Photosynthesis in Higher Plants
  5. /2005 · Q2

Photosynthesis in Higher Plants question

2005 · Q2

NEETBiologyPhotosynthesis in Higher PlantsMCQ+4 / −1
Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because
  1. A
    effective pumping of CO2 into bundle sheath cells
  2. B
    RuBisCo in C4 plants has higher affinity for CO2
  3. C
    four carbon acids are the primary intial CO2 fixation products
  4. D
    the primary fixation of CO2 is mediated via PEP carboxylase.
View written solutionFree

Correct answer: D

In C4 plants, initial fixation of carbon dioxide occurs in mesophyll cells. The primary acceptor of CO2 is phosphoenol pyruvate or PEP. It combines with carbon dioxide in the presence of PEP carboxylase or Pepcase to form oxaloacetate.
C4 plants are more efficient in picking up CO2 even when it is found in low concentration because of the high affinity of PEP case.

PreviousNext

More from Photosynthesis in Higher Plants

  • Photosynthetic Active Radiation (PAR) has the following range of wavelengths.2005 · MCQ
  • As compared to a C3-plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C4-plants?2005 · MCQ
  • In C3 plants, the first stable product of photosynthesis during the dark reaction is2004 · MCQ
  • Plants adapted to low light intensity have2004 · MCQ
  • Which element is located at the centre of the porphyrin ring in chlorophyll?2003 · MCQ
  • In sugarcane plant 14CO2 is fixed to malic acid, in which the enzyme that fixes CO2 is2003 · MCQ
  • Stomata of CAM plants2003 · MCQ
  • Which one of the following is wrong in relation to photorespiration?2003 · MCQ