The enzyme responsible for atmospheric nitrogen fixation is
nitrogenase
hydrogenase
oxygenase
carboxylase
A.
nitrogenase
Enzyme nitrogenase plays a key role in N, fixations and remains active only during anaerobic condition. It is made up of two protein subunits :
i) non-heme iron protein or Fe-protein or dinitrogen reductase.
ii) Iron molybdenum protein or Mo-Fe protein or dinitrogenase
Insects captured by insectivorous plants fulfil their requirements of
enzymes
oxygen
nitrogen
water
0n high mountains, difficulty in breathing is due to
decrease in partial pressure of O2
decrease in amount of O2
increase in CO2 concentration
all of the above
Convergent Evolution' is shown by
homologous organs
analogous organs
vestigial organs
all of the above