The enzyme responsible for atmospheric nitrogen fixation is
nitrogenase
hydrogenase
oxygenase
carboxylase
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
Which of the following is non symbiotic bio-fertilizer
YAM
Anabaena
Azotobacter
Rhizobium
C.
Azotobacter
Anabaena, Nostoc, Aulosira etc., are agriculturally very important as non-symbiotic bacteria also called free living nitrogen fixing bacteria. VAM, Azotobacter and Rhizobium are symbiotic organisms.
Convergent Evolution' is shown by
homologous organs
analogous organs
vestigial organs
all of the above