Which of the following bacteria manufacture their food using sunlight?
a) chemoautotrophs
b) photoautotrophs
c) heterotrophs
d) all autotrophs
Explanation: they possess chlorophyll
Which of the following is/are the source of hydrogen for photoautotrophs?
a) H2O
b) H2S
c) H2SO4
d) HNO3
Explanation: CO2 + H2S à C6H12O6 + S
Some other photoautotrophic bacteria are
a) purple sulphur bacteria
b) sulphur bacteria
c) non- sulphur bacteria
d) all of these
Which of the following bacteria manufacture their food without using sunlight?
a) chemoautotrophs
b) photoautotrophs
c) heterotrophs
d) all autotrophs
Explanation: they do not possess chlorophyll
Chemoautotrophs derive their energy from inorganic substance/s such as……
a) hydrogen sulphide
b) ammonia, nitrates
c) iron compounds
d) all of these
Those bacteria which are unable to prepare their own food are ………
a) chemoautotrophs
b) photoautotrophs
c) heterotrophs
d) sulphur bacteria
