The most primitive organisms showing oxygenic photosynthesis are
Green algae
Chrysophytes
Green and Purple Sulpher Bacteria
Cyanobacteria
Related Questions
The smallest free-living organism is
Virus
Mycoplasma
Diatom
Cyanobacterium
Bacteria are the sole members of which of the given kingdom w.r.t Whittaker’s kingdoms system of classification?
Monera
Protista
Fungi
Animalia
Streptomycin is obtained from
Streptomyces griseus
S.aureofaciens
S.venezuelae
S.ramosus
Spirochaetes is/are
A class of insects
A class of viruses
Bacteria
Fungi
Prokaryotic organisms capable of nitrogen fixation in specialized cells called heterocyst
Have chlorophyll a similar to green plants
Are generally not surrounded by gelatinous sheath in colonial forms
Lack photolysis of water and PSI
May have chemosynthetic nutrition also
Cyanobacteria are:
Producers
Decomposers
Consumers
All the above
Read the following statements regarding methanogens and select correct options
(i) They are included in the group of archae bacteria
(ii) They are responsible for the production of biogas in gober gas plants
(iii) They live in hot sulphur springs
(iv) They are strictly anaerobic
Only statements (i) and (ii) are correct
Only statements (i), (ii), (iv) are correct
Statements (ii), (iii) and (iv) are correct
All statements are correct
Leprosy occurs due to
TMV
Monocystis
Salmonella
Mycobacterium
Monera includes
heterotrophs
chemoheterotrophs
chemoautotrophs
All the above
All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct, except that Frankia
can live free in the soil
forms nitrogen-fixing root nodules on its host
produces spores
produces antibiotics effective against other soil bacteria
