The principle of limiting factors was proposed by
Blackmann
Hill
Arnon
Liebig
All types of plastids possess essentially the same structure because they
Perform the same function
Stored food materials like starch, fat and protein
Occur in aerial parts
Can transform from one from to another
Plants adapted to low light intensity have
Larger photosynthetic unit size than the sun plants
Higher rate of CO2 fixation than the sun plants
More extend root system
Leaves modified to spines
