Accumulation of food in assimilatory cells results in –
Generally CO2 is not limiting for hydrophytes –
Which one is the correct summary equation of photosynthesis?
A graph that plots the rate at which CO2 is converted to glucose versus the wavelength of light illuminating a leaf is called
Two pigment system theory of photosynthesis was proposed by or Concept of evidence for existence of two photosystems in photosynthesis was given by
Solution
The discovery of Emerson effect stated that one group of pigments absorbs light of both shorter and longer wavelengths (more than 680 nm)and another group of pigment absorbs light on only shorter wavelengths (less than 680 nm). These two groups of pigments are known as pigment systems or photosystem.
The scientist, who proved that bacteria use H2S gas and CO2 to synthesize carbohydrate, is
Solution
In 1930 C.B. Van Niel proved that, sulphur bacteria use H2S (in place of water) and CO2 to synthesize carbohydrates as follows :
6CO2 + 12H2S → C6H12O6 + 6H2O2+ 12S
This led Van Niel to the pastulation that in green plants, water (H2O) is utilized in place of H2S and O2 is evolved in place of sulphur (S). He indicated that water is electron donor in photosynthesis.
Suspension of isolated thylakoids in culture medium containing CO2 and H2O does not produce hexose due to absence of
