MCQs of Biology – Cyanobacteria

Blue- green algae is found in:

Prokaryotic algae belong to:

Cyanobacteria is a new name for:

Nostoc is a :

Prokaryotic ribosomes are:

Cell division in blue- green algae closely resembles to that of:

First oxygenic photosynthesizer of earth:

Hormogonia are produced by:

Trichodesmium erythreum shows phenomenon of:

Cell wall of eyanobacteria resembles very closely to:

Sexual reproduction in cyanobacteria is by:

Trichomes of blue – green algae lack:

Cell of cyanobacteria differ from that of eubacteria in having:

Akinites of ble- green alage are meant for:

Plasmids are extra- charomosmal genetic material of:

Abundance of cyanobacteria in paddy fields results in saving of:

Hormogoina are vegetative reproductive structure of:

Richest source of protein is:

Bacteria and cyanobacteria have similar type of:

Cyanobacteria differ from bacteria as they:

Professor R.N. Singh studied:

Blue- green algae (cyanobacteria) lack:

Nitrogenase enzyme occurs in some blue-green algae in its:

Blue- green algae perennate un-favourable condition through;

Trichodesmium that causes phenomenon of ‘red sea’ belongs to:

Nostoc or Anabaena occurs endophytically in:

Loosely suspended thylakoids are seen inperipheral cytoplasm in cells of:

Cyanophages were discovered by:

Cyanobacteria lack:

Water logging in paddy field enhances growth of:

Microcystis aeruginosa is usually found associated with:

Leucohytes are those which lack ability of:

Oscillatory movement of Oscillatoria is due to its:

False branching is exhibited by:

Thick- walled, resistant resting spores which are densely packed with food filamentous cyanobacteria are:

Best nitrogen fixing ability has been reported in:

nitrogen fixing genes are found in:

Some blue-green algae serve as ‘Biological filters’ in fresh waters as they reduce:

Blue- green algae resemble with green algae in their:

A blue-green algae, which produces red filaments and occurs in red sea:

Motile cells are altogether absent in members belonging to:

Intercalary heterocysts are found in the filaments of:

Scytomema usually occurs:

Vegetative propagation in cyanobacteria is by:

Temperature tolerance in some blue- green algae is due to presence of:

Amount of protein in Spirullina on dry weight basis nearly:

Pseudovacuoles and gas vacuoles are found in the cells of certain planktonic:

Azolla is often used as a good biofertilizer because it contains:

Alfa and beta granules of cyanophycean cells are there:

None- symbiotic nitrogen fixer is: