A very efficient converter of solar energy with net productivity of 2-4 kg/m2 or more is the crop of
wheat
sugarcane
rice
bajra
In C4-plants, Calvin cycle operates in
stroma of bundle sheath chloroplasts
grana of bundle sheath chloroplasts
grana of mesophyll chloroplasts
stroma of mesophyll chloroplasts
Fixation of one CO2 molecule through Calvin cycle requires
1 ATP and 2NADPH2
2 ATP and 2NADPH2
3 ATP and 2NADPH2
2ATP and 1NADPH2
The principle of limiting factors was proposed by
Blackmann
Hill
Arnon
Liebig
Stomata of CAM plants
never open
are always open
open during the day and close at night
open during the night and close during the day
In C3-plants, the first stable product of photosynthesis during the dark reaction is
malic acid
oxaloacetic acid
3-phosphoglyceric acid
phosphoglyceraldehyde
Protochlorophyll differs from chlorophyll in lacking
2 hydrogen atoms in one of its pyrrole rings
2 hydrogen atoms in two of its pyrrole rings
4 hydrogen atoms in one of its pyrrole rings
4 hydrogen atoms in two of its pyrrole rings
Cytochrome is
metallo flavo protein
Fe-containing porphyrin pigment
glycoprotein
lipid
Nine-tenth of all photosynthesis of world (85-90%) is carried out by
large trees with millions of branches and leaves
algae of the ocean
chlorophyll containing ferns of the forest
scientists in the laboratories
Photochemical reactions in the chloroplast are directly involved in
formation of phosphoglyceric acid
fixation of carbon dioxide
synthesis of glucose and starch
photolysis of water and phosphorylation of ADP to ATP
