The majority of heterotrophic bacteria are
1. Decomposers
2. Autotrophs
3. Lithotrophs
4. Organotrophs
Lactobacillus comes under which category
(1) Autotrophs
(2) Lithotrophs
(3) Organotrophs
(4) Heterotrophs
Chemosynthetic bacteria does not use which inorganic substrate?
(1) Nitrites
(2) Nitrates
(3) Chlorides
(4) Both (1) and (2)
Which of the following is incorrect about bacteria?
(1) Simple structure
(2) Not so extensive metabolic activity
(3) Complex behaviour
(4) Can be autotrophic
Chemosynthetic autotrophic bacteria does not help in recycling of
(1) Nitrogen
(2) Iron
(3) Sulphur
(4) Mangnese
Leguminous plants have bacteria with which kind of mode of nutrition-
(1) Heterotrophs
(2) Autotrophs
(3) Lithotrophs
(4) Organotrophs
Chemosynthetic autotrophs derive energy by
(1) By sunlight
(2) By oxidation of inorganic substances
(3) By reduction of inorganic substances
(4) By reduction followed by oxidation of inorganic substances
The most abundant prokaryotes helpful to human in making curd from milk and in production of antibiotics are the ones categorized as
1. cyanobacteria
2. archaebacteria
3. chemosynthetic autotrophs
4. heterotrophic bacteria